Chapter 254 - STEPSISTER SUCCUBUS ch 2 By GadenKerensky

"Haha... well, guess I have some explaining to do," Sophia said.

Marc looked on with a shocked expression, dumbfounded and frozen in place, before letting out a shout and trying to push up against the headboard, even as he was still inside her.

"What the hell?!" he exclaimed, starting to feel fear inside of him, but before he could even attempt to push her off, Sophia squeezed her pussy's walls around his glans with unexpected precision, sending a pleasurable shudder through him.

"Calm down," she said with a soft and soothing voice. "And don't panic, I'm not going to hurt you."

Whilst her squeeze had effectively stopped him from scrambling away, it didn't completely erase his fear, chest heaving as he eyed his now demonic stepsister, whom he had previously just had the best sex of his life with.

He calmed himself as best as he could, gripping the sheet as he looked into her red eyes, those slit pupils narrowed as she focused on him, further unsettling him.

"What... the fuck... are you?" he asked.

She sighed out, seemingly annoyed by his fear.

"I'm a succubus," she answered, prodding him in the nose. "You know, demons of lust and sex and temptation and all that bullshit."

"Succub-- but don't they kill men?!" he blurted.

"So a lot of the old myths like to say," she said rather calmly, pressing a hand to his chest. He couldn't explain why, but it seemed to calm him down, his breathing easing a little. "But that part is the bullshit part."

He tried to process this, but his head was still spinning... and it didn't help that he was still inside her, if soft now, and she was still naked, and for all her newfound demonic features, she still looked gorgeous.

Eventually, he managed to speak some more.

"How can I trust you?" he asked, still afraid and confused.

She shrugged.

"I suppose you really can't trust me," she said, before smirking and reaching forward to clutch his chin. "But I am being honest when I say I don't want to hurt you~ There's no fun in that. It's a lot more fun to make you moan instead, though I will say, your energy is delicious~"

"My energy? So you are sucking on my soul or something!"

He tried to scramble away again, but she gripped his shoulder with surprising strength, and sighed out in frustration.

"Your energy, not your soul. They're connected but not the same," she explained. "Besides, I've only been sipping. I didn't want to scare you, until you learned what I really am, but... well, I guess I'm not the best at controlling my form yet."

She chuckled sheepishly like it was a good joke. There was something about it that was... strange. Not unsettling, but rather, genuine. Not that bizarre subtle flirting she'd been doing with him since they met, but a true moment from her. It made her seem believable, but he was still scared to let her convince him.

She sighed out again, and looked him in the eyes.

"You're not in a good position to think about this," she said. "You're scared. So, how about this; I let you sleep this off, and I can tell you everything in the morning. Deal?"

He thought on this for a moment, considering that, so far, she hadn't hurt him. Was it a long-con deal, or was there genuinely no malice in her actions?

"How do I know you're not trying to deceive me?"

"I guess you don't. Deception and temptation is our thing, after all," she admitted. She then smiled and cupped his cheek in her hand, Marc feeling the tips of her now elongated nails gently grazing his skin. "But you are more than just a meal, Marc~ That I can assure you."

She leaned back, making him groan as her walls shifted around his flaccid member.

He was quiet for a moment, and then let out a sound of frustration and thumped his hands on the bed.

"Well how the fuck am I supposed to get some sleep now?" he asked.

Sophia eyed him deviously.

"Well, if you're willing to show some trust, I could help with that, and it doesn't even involve sex~"

"I don't trust you... but this is all just so fucking crazy," he said. "A break from it would be nice."

She smiled and sighed out as though he'd just lifted a weight off her.

"Then relax, and don't panic," she said as she clutched his jaw and lifted his head to look into her luminous red eyes, which now glowed brighter. They seemed to pulse softly, and he quickly found himself losing everything to Sophia's gaze, all the fear he had before vanishing, unable to see anything but those deep, unfathomable orbs. There was, at the deepest recesses of his mind, a part of him that pounded for escape, that he should panic.

But he couldn't overcome it. Couldn't overcome her mesmerising gaze.

Then she pressed her other hand to his brow, gently splaying her fingers. A faint aura formed around her digits.

And then he was overcome with powerful weariness and he fell into sleep like a stone.

---

Morning came, and Marc stirred, groaning and groggily shaking his head as he tried to shed the weariness. It had been a restful sleep, save for some strange, lurid dreams involving Sophia.

He then vaguely recalled what they had done yesterday, and last night. He wondered if that had been a bizarre dream.

But when he peeled back his sheets and blanket, he let out a deflated sigh as he saw his flaccid cock, still nude, and he confirmed that what had happened was no dream.

It all came back to him, and as he swung his legs over the side of the bed, he placed his head in his hands, feeling a pit form in his gut.

He had sex with his stepsister. That was weird enough, but she made compelling arguments. Even made him seem excited by the idea.

But then she revealed herself to be a demon. A succubus no less. That seemed even now, unbelievable, impossible. It couldn't be real.

But the more he remembered, the more it felt real, in some form. And he remembered what she'd suggested to him.

About talking.

He didn't want to talk. Not really. A part of him wanted to run, far away. But what of his father?

He really didn't know what to do. It was all so crazy.

Yet, perhaps Sophia was right; the sheer shock of it all had faded a little. Maybe he was in a position to talk about this.

What they could talk about, he had no idea.

With a grumble, he steeled himself, and found his clothes. If he was going to confront the devil, so to speak, he may as well armour up; god forbid he confront a demon of lust in the nude... and Sophia could still get him riled regardless.

"This is all so fucked," he grumbled as he left his room, though he did have to give her credit in one thing; for everything that had happened, that was some very good sleep.

---

He emerged into the living room, and found Sophia seated at the bench dividing the kitchen from the lounge sipping from a glass of juice.

She was clothed now, as modestly as she usually was, so still possessing a casual allure. At the very least, she looked human, no longer sporting any of those demonic qualities.

She looked up and gave him a faint smile; it wasn't as playful or teasing as usual, not even as devious.

"Sleep well?" she asked.

He paused for a moment, and then sighed; there was no point in being combative, that would probably get him nowhere.

"I did," he admitted. "What did you do to me?"

"I used a charm," she said. "I hypnotised you, and then put a sleep charm on you."

For a moment he bristled at the word 'hypnotised', but relaxed as he recalled she had suggested something to help him sleep, and he had agreed.

Either way, it had worked.

"And that's all?"

"That's all," she said calmly. "I didn't implant any suggestion inside you or anything. I only do that with my regular 'prey', and before you panic, I'm not hurting anyone. In fact, it helps me feed without hurting anyone."

There was something creepy about the way she so casually tossed the words 'prey' and 'feed' around, but she seemed to be doing her best to be honest.

He had to at least respect her for that. Marc wheeled around to the other side of the bench, finding a chair and sitting across from her; he wanted to be further away, but if she was being diplomatic, at least he should.

They were quiet for a moment. All he could hear was the nigh-imperceptible buzzing of idle appliances and muffled sounds from outdoors.

Eventually, he spoke.

"So... a succubus, huh?"

"Yeah, a succubus," Sophia answered. "Demon of Lust, literal Sexual Predator, Doomer of Men, yadda yadda."

"But you're not going to doom me?"

She shook her head.

"Very few of us exist, and fewer still have an eagerness to kill anyone... and they usually don't last long," she explained. "If they ever get the chance to hurt anyone."

"Why's that?" he asked.

"If what mum tells me is true, some dedicated hunters find them. Not humans, us. But that could be a legend, because I don't know many other succubi, and they don't know of any who have hurt people in recent years."

"Your mum? So you mean Maria?" In hindsight, it made sense, and it explained why she looks so damn good for a woman in her thirties, but still, the idea that his stepmother was also a succubus was... surreal.

"Yeah. Other than conversion, succubi can have children... though both are rare. It takes... special circumstances for either, and the circumstances are different for both situations. I won't go into them, it's too convoluted to explain to you right now."

"Fine," he murmured. "But what you said before, about 'prey'. And 'feeding'. What's that about?"

"I figured you'd be asking this quickly enough," she surmised. "You know the legends, the old bible stuff about Succubi draining the vitality of men? Eventually they expire? That's kinda true. We do feed on life energy. And if we keep feeding for too long, it could kill someone. Even in a few moments if we drain enough at once. But we don't. We can sustain ourselves by feeding on many different people, so that they can recover. We seduce or charm people, drain their energy, and then manipulate their memories so they don't remember us as demons... or at all, thinking it was all a lovely wet dream. It depends on the situation, and our mood."

Marc took this in, his hands laced together in front of his mouth, elbows on the bench.

"But you haven't done this to me?" he queried. "Why?"

She gave him a soft smile, leaning forward and inadvertently showing off her cleavage. He felt some heat in his face and he quietly grunted, trying to ignore it, though he caught the quick smirk from Sophia, which only made him feel more embarrassed.

"Because you, Marc, are special," she stated. "You and your dad, to me and my mother. You could say you are our... soul mates, in a sense."

Marc perked up a little, looking at her quizzically.

"Somehow I get the feeling you don't mean that in the romantic sense."

She shook her head with a small chuckle.

"No, though it does come with a certain amount of attachment."

She learned forward, tapping her fingers on the bench top as she began to explain.

"You see, to survive, we succubi and incubi - yeah, incubi exist too - need to feed on life energy. For us, doing so through sexual acts or sexual fluids provides us with the most sustenance, and its why our feeding can induce an orgasmic pleasure in our 'prey'. We can feed on anything that can be considered a 'source of life', like blood and semen, though the latter sustains us better, though we're not literally feeding on the semen, and we don't strictly need it either."

"You know how fucking bizarre this sounds? Like a bad smut," Marc interjected. Sophia laughed.

"Truth is stranger than fiction, remember?" she retorted.

"Fair point."

Sophia continued.

"We could feed through something as simple as a kiss. Even drive someone to orgasm with one. Which is pretty fun~ Of course, we could also suck out someone's soul through a kiss, or kill them, though like I said, we don't really do that. But that brings me to the next point; the soul and life energy aren't the same thing. It's more like... a star. Like the soul is the sun. And the life energy is produced by it. As long as we don't drain too much energy, the soul can recover and produce more from it. Of course, we can always steal the soul from someone, but we rarely do that outside of some... specific scenarios that rarely happen these days. It doesn't kill the person. It doesn't even stop them producing energy, as their soul is still linked to them. But in our possession, it means that they are forever bound to whoever holds their soul, beholden to whatever command the holder makes. A servant if you will."

Marc slowly nodded as he absorbed this information, though inwardly it seemed insane and extra bizarre with how straightforward she was being.

He also held his tongue from saying it sounded more like a 'slave' situation, but he was still trying to be diplomatic.

"But you can hypnotise people, right?" he said, and he recalled how utterly mesmerised he was by her last night.

"We can. We can easily wrap people around our fingers with magic, as long as they don't have some sort of protection or their will isn't iron strong. And before you get offended, and I'm not calling youweak willed. You relaxed, remember? You gave a bit of trust."

"I still felt something in the back of my mind fighting," he admitted.

"Of course. But you weren't fully trying to fight me off mentally at that point, so I was able to charm you easily. But back to what I was saying, we can manipulate people, mind control them basically, but having their soul means they are bound to fulfil our commands, no matter their willpower or protection. But that's not what drew mum to your dad, and me to you."

"Then what did?" he asked.

"You see, to avoid rousing suspicion and avoid hurting people, we need to feed on quite a fewpeople. Not that we mind of course, variety is the spice of life. But there are certain bloodlines and lineages that are... well, I don't think 'destiny' is the right word. I think 'compatibility' is more apt. And sometimes, those bloodlines have generations that are strong enough to produce 'soul mates'. People whom we can feed off more regularly with less impact on them. When we find them, we're drawn to them like crazy. And it's more than just a matter of being a better source of food, there's this... connection, this attraction. They're always people that excite us. I can tell you now, the marriage between your father and my mother? That's genuine, even if she does indulge with others. That's just our nature, but I wouldn't be surprised if she does crazier things with him than anyone else."

Marc raised his hands.

"I... really don't need to know about my dad's sex life," he said.

Sophia shrugged.

"Point is, if not destiny, you and me, Peter and Maria, we're highly compatible. That's the deal between you and us."

Marc leaned back in the chair as she finished, Sophia seemingly waiting for him to process all that she had just said.

He shook his head and huffed.

"This is crazy. You know that, right?" he quipped.

"Of course it is, to you at least. You're a human, this would be crazy to you. Until now, demons didn't exist. And now you have a super hot, super horny, cum-drinking, energy-sipping, mind-blowing-sex-giving succubus for a step sister."

She grinned at him as she went on that unnecessarily descriptive statement, Sophia ever unable to hold back her lusty side for long.

"When you put it like that, it sounds even crazier. Also too good to be true," he grumbled. He sighed then, and looked around, before looking at Sophia. "So what now?"

"Now? Well, I suppose we could do what I suggested before. Live life, just we get to do the exciting stuff earlier," she said with a salacious grin. "Show you all the neat tricks you'll never get with a human girl~"

It was a tempting offer, Marc couldn't deny that. He was still afraid, still a little mistrustful. But if she was being truthful, then maybe her idea wasn't a bad one.

"And otherwise?" he asked, to which her expression fell a little and she showed more pensive look.

"Otherwise... I guess I'd have to alter your memory, because I don't think you could really live with the knowledge and try to act as if nothing happened. Think about what I said yesterday. Knowing I'm a succubus would only make that even worse, for both of us. I don't want to do that, not with you, Marc. But you'd lose your mind."

"Doesn't sound like much of a choice," Marc murmured. "More like a reluctant ultimatum."

"Pretty much," Sophia agreed. "I leave it up to you, but personally, I'd go with the first choice. It's more fun."

Marc had to agree there, it did sound more fun. But he still couldn't shake the idea that every word was a clever deception. But a grim thought popped into his head that, unless he tried to kill her or something, he was dead regardless. She'd eventually snare him and that would be it.

Of course, there was always the possibility she was telling the truth. She did admit deception was part and parcel of being a succubus, so either that was part of the possible long-con the paranoid part of him kept suggesting, or she was simply being honest with him.

In her own... weird, demonic, succubus-y way.

She suddenly leaned forward and smirked.

"I have a suggestion that might earn your trust and help you make your decision~" she said with a sly tone and a lick of her lips that told him it was not going to be a wholesome idea.

Of course, his mind was a little frazzled with the surrealistic revelations she'd shared, so at this point he was honestly willing to hear it.

"I guess I can go on a little faith."

"Funny word to use, but whatever. How about... I kiss you~ And I drain you, hard~ You'll get to feel what it's like~ I'll drain you until you pass out~ And when you wake up, then you can make your decision~"

She seemed eager to try this. Marc thought it was crazy, especially with how forward she was being, it was different to her more playful sideways flirting he'd come to know of her. But he guessed she was leaving that aside for his sake... even if the upfront approach still boggled his mind.

"You won't lose control like last night?" he asked, a bit weary still.

"Lose control of my form," she corrected. "Not draining someone to death is easier than that. I'm just reverting to my true form. It's hard to explain."

It made some sense to Marc, but still, there was a little trepidation.

But again, her idea seemed... appealing. Maybe a little scary, especially since it sounded so bizarre and alien. But the idea of trying it was... enticing.

After a moment of internal debate, he threw up his arms in personal defeat.

"I guess I can take a gamble," he said. "But if you kill me or take my soul or whatever, so help me, I'll find a way to haunt your ass," he warned with a pointing finger.

She chuckled playfully in response.

"Wouldn't have it any other way~" she crooned, before suddenly leaning forward and cupping his cheek in one hand, pressing her lips to his in a soft, luxurious kiss.

It took him by surprise, but after a moment of fighting back reflexive panic, he let Sophia do as she needed, and sank into the kiss, relaxing.

The kiss deepened, and grew from soft to salacious, his stepsister twisting her head a little to mesh their lips together more erotically, her tongue slipping into his mouth to tease and swirl around his own.

Arousal immediately set in, and it didn't require any additional magical touch from her; she was just that good of a kisser.

The soft smacking of their lips filled his ears, and Marc found himself slowly working his own jaw to return the kiss.

After last night's revelation and everything Sophia had revealed thus far, the idea of kissing his stepsister seemed so banal.

Of course, the kissing itself was wonderful.

She leaned forward a little more, almost crawling onto the bench as she brought her other hand to grip the side of his head opposite the cheek she cupped.

Her kiss was growing more heated, more assertive. It seemed very much to Marc that she was getting over excited. But, he couldn't stop the kiss, he didn't want to. And he was operating on a little trust at the moment. He didn't want to back out now.

She closed her eyes and moaned deeply, savouring the kiss like it was physical pleasure for her. Maybe it was, she wasn't human.

Then she opened her eyes, and Marc found himself staring into those deep red orbs, glowing around those slit pupils.

It was frightening and alluring, but all very sudden.

Then he felt something strange. A thrumming, airy sensation deep in his chest, radiating outwards with a bizarre stimulation. He felt a tug on this... ball of buzzing sensation, and a wending stream of it start making its way up to his throat.

Strange colours began to swirl around his body, an aura forming around them both, pale purple-red or blue in colour, it seemed to fluctuate.

Belatedly, he realised it was similar to the bizarre sensation he felt when they were having sex last night. Only stronger, perhaps now because she was not holding back her drain.

A part of him wanted to pull away. It was a little scary, but the pleasure and the bit of faith he was working on kept him from panicking. He felt his cock stirring in his loins, feeling this pleasure, even though nothing was acting on it. He could even feel a dollop of precum form on the tip as his shaft throbbed.

Sophia pushed into the kiss deeper, tongue exploring his mouth more aggressively than before, every touch it made sending a small arc of stimulation from every point of contact. Soon the flow of sensation made its way into his mouth, and began to flow out of it, drawn into her like she was inhaling his very essence. His tongue tingled, caught in the middle of this flow, and his lips buzzed with tantalising stimulation much the same. His erection grew harder in his pants, and he could feel the precum starting to stain his underwear.

Her lips then released his, but that didn't stop the bizarre feeling... it only let him witness what was happening more directly. Sophia was making one long inhale, as though she had no need to exhale, and in so doing, she pulled a stream of luminescent, smoky something straight from his mouth, held ajar the moment the kiss broke by some unseen force, swirling lights spiralling around the plume that dissipated into the skin of her face and elsewhere. He could see the back of her throat glowing, brighter than the column of vaporous light issuing from his gullet.

He saw the corners of her mouth twist into a grin. Admittedly, the whole thing was kinda frightening. But he couldn't compel himself to stop now, the surreal sensation had put a cloud over his mind... and the pleasure was only intensifying, his cock throbbing and staining itself in its own precum, his balls twitching with need.

Sophia then moved her head forward once more and restored the seal of their lips, again moaning softly as if she were experiencing pleasure. Maybe she really was, he couldn't really tell, Marc definitely felt like he was having an otherworldly experience.

Not helping things was the weakness that was starting to set in, his limbs feeling light and his head growing a little dizzy, but nothing could completely shatter his attention on Sophia as she mashed her lips repeatedly against his own, her tongue performing a tango around his as it meekly tried to lick back.

The pleasure did not dull either even as his other senses began to diminish as the bodily fatigue spread.

There was a fugue in his head, anything not focused on her or the pleasure he was feeling a dazed mush.

There was nothing else save Sophia and her kiss, and her drain.

Marc still felt a little fear, the feeling of weakness and lethargy mixing with acute pleasure, it was bizarre and alien, and with what clarity of mind he could muster, he could understand how a Succubus could kill with this.

But the fear was distant, his mind clouded by the pleasure and the weakness. His loins, however, he could feel bursting with pressure, his balls churning and his cock making a mess of his underwear from precum alone.

And still Sophia kissed and drained him, twisting her lips against his mouth and exploring every inch of his cavity that her tongue could reach. At times he thought it had stretched, but in his fugue he couldn't tell.

His eyelids were growing heavier. It wouldn't be long before he just... passed out.

But before that could happen, he let out a strained groan of ecstasy, bucking on the stool, cock throbbing with each spurt of cum he soaked his underpants with, eyes rolling upwards in response.

Yet Sophia kept going, and the fear he felt strengthened a little. He couldn't tell her to stop, but the pleasure was just as intense, if not stronger than ever, surging with his climax like something had crumbled. It was overwhelming, all consuming, his vision darkening and his view flashing with a faint light from the aura that surrounded him.

He was about to slump against the benchtop, only kept up by her hands. He was so weary, he could barely keep his eyes open. He felt numb besides the stimulation which remained as acute as ever.

Time lost meaning, and his body began to spasm like it was having a seizure. He was afraid and euphoric all at once.

Then he came in his pants a second time... and slipped from consciousness.

---

It was the deepest sleep he'd ever experienced. He didn't even dream. It was a sleep akin to death... but dead people didn't wake up to a knocking at the door.

He groggily blinked his eyes, straining upwards, finding that at some point he'd been returned to his bedroom, tucked in even.

At first he only remembered passing out in the kitchen. He couldn't quite recall what happened... but as the knocking and calling voice at his door further jarred him awake, it slowly came back, along with present clarity of mind.

"Marc? You in there?" came his dad's voice. "Sophia said you were having a bit of an off day, but you should be done with your nap by now."

Marc did initially want to snap at his dad for the rude awakening, but given all that had happened, he held his tongue. It was the fair thing. Remarkable with how groggy he was.

"Yeah," he answered blearily, "yeah I'm in here."

"Just checking up on you, is all," Peter answered. "Maria and I are back, I hope our overnight stay wasn't too much of a hassle for you."

If only he knew what Marc and Sophia had gotten up to, Marc thought. But then again, Maria was a succubus too... he didn't want to think about what she and his dad got up to.

"Not the first time," he said, blinking away the sleep. "I think I'm used to it by now."

"Alright then. I guess I'll leave you to your nap, but you should probably get up, it's the afternoon," Peter said, and then Marc heard his departing footsteps.

Afternoon. It had been morning when Sophia convinced him to let her drain him. Now it was afternoon.

He glanced at his clock.

15:37

He'd been out for hours. He didn't know exactly how long, he never checked the time when he woke up. And he felt like he could sleep for hours more, he still felt exhausted.

But, he figured he needed to throw off any suspicion, not ready to reveal anything to his father and stepmother... though in the latter's case, he had his own suspicion she already knew. Or anticipated it. Sophia had said as much, that both he and his father were 'soul mates'.

He paused for a moment to reflect; only now was the sheer insanity of what had occurred really dawning on him. His stepsister was a succubus, as was his stepmother, drawn to him and his father because apparently genetic lottery or some bullshit meant they were especially compatible.

The most egregious part being the succubus part.

And then the drain... it was both terrifying and stimulating beyond anything he'd ever experienced. He came, twice, and all she was doing physically was kissing him.

It was all so surreal. But he then recalled the deal he made with Sophia; he had more words to share with her. And he recalled her reluctant ultimatum.

Either go with the flow and enter into a sexual relationship with his stepsister who also happened to be a demon that fed through fucking and other obscene acts, or have his memory altered so he didn't threaten her or her mother... but mostly, to spare him from insanity trying to live as if nothing was different whilst knowing everything. She seemed so genuine when she said it, so honest when she said she didn't want to do that.

Still, it was an ultimatum, even if she didn't like it, and part of him was still paranoid that it was all some four-dimensional deception ploy. There was a bias there, she was apparently a demon after all, and she admitted Succubi dealt in lies and deception. But again, she was so forward with her information.

He swept his hands over his head, groaning. The same thoughts kept repeating in his head. 'She was a demon, so she must be lying, but she seemed so honest'. It was driving him nuts.

"This is fucking bullshit," he muttered. He didn't want to make these kinds of choices, reflect this deeply, he wanted to just lounge all day, play games, just... fuck around until he had to get a job.

And not necessarily literally, as Sophia had suggested...

But it was honestly... very tempting. Beyond tempting.

She had been the best fuck of his life even before she revealed she was a demon. And now... he couldn't help but wonder about the 'tricks' she could do, that no human could. That drain alone, frightening as it was... was fucking amazing, in its own way.

Perhaps, if he could convince her not to pull that every time... and assuming she wasn't slowly killing him... maybe immersing himself in the supernatural would prove all the more delightful.

"Fuck it," he muttered, swinging himself out of bed, noticing that he'd been changed whilst he was unconscious, probably by Sophia. Both weird and considerate, but he wasn't about to criticise her for stripping him when he was passed out just to give him fresh clothes, it was probably the least weird thing she could've done.

He hadn't made up his mind quite yet... but he was definitely leaning towards the idea. No one else he knew could claim to be in a weird open sexual relationship with a sex demon.

---

He ambled out of his room, still feeling a little light on his feet; the drain had taken it out of him. He went searching for Sophia, hoping it'd be somewhere private, he could hear his stepmother and his father conversing downstairs.

He then realised that Sophia had to have hauled him upstairs whilst he was basically a sack of potatoes. Then again, she wasn't human. She had actual magic. She might've 'cheated'.

He leaned on her bedroom door, and paused; he'd never gone in here before. He'd always avoided it, especially given Sophia had a tendency to wear... not much, even if the door was open a little.

And now with the revelation of her true nature, it felt like going into the lion's den.

'Get a grip, dammit,' he chastised internally. If he was going to have this conversation, then he'd have to get over the trepidation of... going into his stepsister's bedroom.

Were it not for circumstances, it'd be such a ridiculous thing to be worried about.

He raised his hand... and knocked.

"Who is it?" came Sophia's voice. It was calm and mercurial, oddly soothing, so it relaxed Marc a little bit.

"It's Marc... you know what it's about," he said.

He heard footsteps approaching the door, and he braced himself on the door frame so he didn't fall forward when she opened it.

The knob turned and it swung open. Her eyes were normal again, but having seen the depths of those red orbs she possessed, even her 'human' eyes seemed a little distracting.

"Come in," she said, a slight sensual edge to her words, though it also seemed like she was trying to reign herself in, just a little, for his benefit.

He walked in and the door was shut behind him. He felt trapped, in a way, but it was better than letting their conversation filter downstairs.

Her room was a little girlish, the odd boy band poster and movie poster clinging to the walls, which were painted with a dull shade of mauve, with pale pink sheets beneath a slate coloured blanket. There were a few plushies here and there, but ultimately her room was pretty tolerable as far as its girlishness went, not too much in it besides a desk with a laptop, a few figurines spread around as decoration and not much else.

The biggest thing was her; the conversation was not going to be simple, with her wearing a loose fitting tank and panties, and nothing else. She couldn't be more casual if she tried, unless she just lost the clothes. Not outside the realm of possibility.

She sat on the bed, knees included and legs tucked to the side, patting a space next to him to join.

He was still a little hesitant, but he really didn't feel like standing too long, so he obliged and sat next to her.

"How are you feeling, bro?" she asked. He refrained from calling her out for the 'bro' remark, still not entirely comfortable with that.

"I feel wasted," he said, shaking his head and blinking his eyes rapidly, blowing out a harsh breath. She giggled.

"Not surprised. I basically went as hard as I could without sucking out your soul. If it makes you feel better, that's still a ways from killing you, so you weren't in any danger. Though you probably needed a night's rest to really recover, you should be fine now."

"I still feel like I'm gonna fall over."

"I could do that even without draining you~" she remarked with that all-too-familiar edge of seduction, leaning forward to show off her cleavage.

"I'm sure you could," he muttered, shaking his head. He then looked at her, and discovered that focusing on her eyes when her breasts were there to be looked at wasn't the simplest task, as the mesmerising feel of her eyes now made it hard to look at them without him feeling strange. "So... you're offering to be a fuckbuddy, basically?"

"Something like that," she said, gently brushing the blanket in front of her with a hand, briefly biting her lower lip. "We indulge each other, I get to feed off you, you get the best sex you'll ever have, and more, and I get to try the fun stuff on someone who'll remember~"

Marc could hear just how excited she sounded at the idea, especially the last part.

He'd already accepted, rather without thinking, that she'd probably end up banging other people. She already did, she admitted as much, and somehow it didn't bother him so much.

Maybe because she wasn't human, so the concept of fidelity... probably didn't apply too strongly, especially since sex was how she fed.

Still, the idea that he'd be special in some way, and the subject of some more... exotic experiences, that made up for it in his mind.

"And the only strings attached are the whole feeding part and me keeping it a secret?" Marc added.

"I figured those were a given," Sophia agreed. "That and I'd still probably be feeding off others."

"Yeah, I had a feeling, but given this whole scenario, I don't think I was expecting a 'loyal girlfriend'."

She was quiet for a moment, and then giggled.

"What's so funny?" Marc asked.

"Just that, of all the things I expected you to go crazy about, the fact you seem okay with my... 'proclivities', is surprising to me. Not everyone is so blasé about it."

"Well, you being a succubus, it's probably in your nature to have an 'appetite', right? Even if I'm apparently 'special', you wouldn't be satisfied with just me."

She leaned forward and playfully poked his nose.

"You got it~" she chirped. "It's just not in our nature to stick with a single partner, even our soul mates, unless you want to be tired all the time from draining. You'd never get to the point of dying, probably, but you'd probably always feel fatigued even if I paced it out."

"Yeah, I'd rather not," he said. "But... you do wear protection, right? That's a lot of guys..."

"Marc. I'm a Demon. Descended from Hell or something like it. Who lives off life energies extracted mostly through sexual acts. If we were vulnerable to STIs or capable of carrying them, I don't think we'd be around anymore. And like I said before, having children? It's a complicated set of circumstances basically requiring a ritual."

Marc was quiet for a moment.

"... you don't actually have an implant, do you," he said, fixing her with a blank stare.

"I did tell you we're not above deception. Just that it's not about leading humans to their doom or making them commit atrocities just for a taste of demon pussy. Whatever allows us to get close to our prey. Or, in this specific case, to explain away certain... discrepancies. Better than just manipulating someone with magic, right?"

"In a weirdly fucked up way, yeah, it is a little," Marc admitted. "You know, you're being very upfront with a lot of this information."

"I want you, Marc," she stated in no uncertain terms. "If being honest helps convince you, no skin off my back. Playing 'hard to get' is only a game for others, and I don't give a shit about being 'easy'."

"Some would call you a slut," Marc retorted. "But then again, I really shouldn't judge."

"That term is basically dirty talk to us," Sophia quipped. "It really doesn't mean much to us."

"Fair point."

"We're sluts by nature~" she said in a joking tone, leaning back and grasping one of her breasts pointedly. "Like porno come to life~"

He winced and felt his shaft stirring, even if she was only doing it as a joke. Or maybe she was trying to seduce him. Probably both.

"You're not making this easy, you know that, right?" he gently chastised.

"You're in my room, right in front of me, teetering on making a decision. Can't really help what's basically instinct to me~"

So seduction it was. He mumbled but looked down momentarily. In a way, it was like dangling a sack of cash in front of someone, it'd be hard to ignore. Or in this case, the juiciest piece of meat ever.

He tried to push the idea of him being some slab of meat for a predator out of his mind, looking back at her.

"The caveat being no one remembers, at least not everyone, right?" he surmised.

"And if they do, we leave enchantments behind to obfuscate just how many people we've done it with. You'd be free of that," she answered.

On a certain level, it was rather messed up how much she admitted to manipulating the minds of people. But, she seemed to have better reasons for it, in a twisted way, than most other people. She did it to hide her nature and the full extent of her behaviour. Though she probably also did it to charm people into sex. He tried not to hold that against her.

She was a demon after all, they probably lived by different morals, but if she was being honest, hurting people was still off the table, whatever form that took.

He was quiet for a moment, contemplating the additional information he'd received. The prospect of being in an erotic relationship with something tantamount to an alien was getting all the more enticing...

"I heard Succubi could change their appearance? Like, other than the thing you did last night. Like other people. That true?" he asked.

"What's the matter, I thought you liked your super hot stepsister~?" she remarked with a playful, seductive tone, leaning back and brushing a leg against his, biting her lower lip. "After all, it was this body you wanted to fuck~"

It was getting harder to resist her not-so-subtle attempts at seducing him. But she had admitted that she was going to try, what with him being in her room and so close to saying 'yes, I'll be your lunch-ticket-slash-fuckbuddy'.

She laughed and sat up straight again.

"But yeah, we can change our look. Looking like someone else entirely though, that takes skill and practise. Mostly we... tweak our appearance to better appeal to the desires of our chosen prey. What that means for you..." She leaned in close until he could feel her breath brushing across his ear like a tantalising caress, and with a whisper, she finished with, "experimentation~"

A shudder coursed up his spine. What moral arguments he had against accepting memory erasure were... less and less compelling.

His growing erection, which she had for sure noticed, was proving to have a stronger case.

He knew it was never smart to make decisions whilst horny, but he was not going to be in a position to do otherwise. He thought, and considered... and after a while, he spoke.

"I have one condition," he said, turning to her with a raised finger, and it was impossible to miss her eyes lighting up with excitement.

"Name it," she said eagerly.

"I want the... memory wipe thing to be left on the table. I want to be able to make that choice at any point. Is that fair?"

A wistful look briefly crossed her face, and then she nodded.

"That's fair," she said, before her expression turned devious and she drew closer to him. "But you'll never want to make it~"

"Then... I guess I accept your terms," he said. It was only them that he realised that he'd basically signed a contract with her. Of sorts. Maybe not the same, but that's what Succubi did, right? Signed contracts with mortals that usually screwed them over.

In this case though, it seemed the terms were the screwing over. In a literal sense.

He also felt a weight lift off his shoulders, as though accepting a sexual relationship with both his stepsister and a demon of lust had shoved off a great deal of stress he would've had otherwise.

"So then... I guess we're a thing now," he said. It felt weird to say, but he was admittedly excited about the idea. If she was going to turn this on him in a bad way... well, he'd only know in the future.

"We are~" she said, leaning in close enough to brush her lips against his cheek, prompting him to shiver; he would have to get used to her casual salaciousness.

Then he jumped when he felt a hand grasp his erection through his pants.

"So why don't we really put a mark on this~?"

She started rubbing his boner, and he panted softly; he wasn't going to say no because he had honestly expected this. Lion's den and what not.

"Parents though..." he muttered with a breathy voice.

"We don't have to make too much noise~ There's more to this whole thing than sliding your dick into my hot, wet, pussy~"

She leaned into his neck, and he felt her lips gently peck at his throat, making his apple flinch.

"When you say shit like that, it sure sounds like that's what you want," he murmured.

"Maybe... but variety spices everything up~ Besides, even I have to be practical sometimes~"

She giggled and unfurled her tongue against his neck in a salacious lick, even as she continued to stroke his cock through his pants, moisture from precum starting to seep through the fabric.

"I'm still tired you know," he said, even though her renewed seduction had invigorated him.

"I won't drain you much... besides, I have the perfect thing~"

She pulled away from him, and slipped off the bed, keeping her hand to his erection at all times, until she crouched in front of him and brought both to her shirt so she could pull it off, lifting her tits and letting them drop with a bounce as she threw her shirt away.

"God, you've got some rocking tits," he said, in what was probably his first, most honest compliment he'd given her.

"God had nothing to do with these," she said smugly, looking down and grasping her perfect globes, squeezing and pressing them together. "But you are right about the rocking part~"

She lifted one up and craned her head down as much as either could go, showing off her flexibility, so that she could run her tongue across an erect nipple in a provocative display. Then she turned her attention to him slowly, and grinned, biting her lower lip.

Sophia then leaned forward and draped her pliant mounds across his crotch, gently shaking her breasts against the bulge in his pants.

"I bet you'd want to feel these wrapped around your cock, don't you bro~?" she crooned.

"You're never gonna give that up, are you?" he grumbled, and all she did was laugh as she brought her hands to the top of his pants and began tugging them down.

"Nope~" she said as she pulled his pants down off his feet, throwing them away. His underwear had a damp spot from his precum... which she leaned in towards to give a gentle kiss, Marc feeling her dab her tongue without any care towards the fabric.

He felt a tiny arc, a familiar but excessively subdued sensation, that of her drain. Unlike before, it was much more superficial, but it did send a pleasant tingle through his cock.

"Damn... I bet you could make someone cum without touching them," he said.

"I've been told powerful enough succubi or incubi could rip a soul from a person just by holding out their hand, and make them writhe in ecstasy in the process~" she answered, conjuring an image in Marc's mind that was both arousing and terrifying. Though it was hard to focus on such things when she started squashing her bust to his tent, caressing and teasing him a little more before finally doing away with the last layer of fabric... only for her to do the same thing again, squashing her breasts and gently shaking her bosom against his crotch.

Though, now with direct skin to skin contact, it felt a lot better. She was so smooth, flawless, and she was so warm to the touch. Her perky breasts also didn't squish too far before putting up some resistance, applying a nice pressure to his junk and his thighs.

All the while, she kept glancing between his cock, and Marc's face, biting her lower lip.

Marc at this point was panting softly, and he felt a little embarrassed with how quick he seemed to be reduced to this sort of mess. Sophia just had that effect.

She kept up the teasing, brushing and bumping his member about with her bust, before shuffling forward and crouching in a more upright manner, smirking. Then she grasped her breasts, squeezing hard enough for the titflesh to fill the gaps between her fingers, kneading her own globes in a provocative display.

"I can see it in your eyes~" she crooned. "You want these bad girls wrapped around your dick so bad~"

She proceeded to repeat her earlier demonstration, craning her neck and lifting up one of her breasts to dab a tongue at the nub with a few lusty flicks, giggling salaciously.

"Read my mind, why don't you," he joked drily. "You could probably do that."

"It helps when working out what gets someone off~" she answered without skipping a beat. "But not everyone needs to have their thoughts probed to read them like a book~"

"Am I that easy?" he muttered.

She looked him in the eyes, and proceeded to wrap her bust around his shaft, prompting him to gasp softly.

"Yes~"

She didn't have the biggest chest in the world, but they were still enough to hug his dick snugly. It was a different feel, with the only lube being his own precum, able to feel her skin against his 'raw', in a sense, at least in parts where his precum hadn't been lathered in yet.

Her breasts were warm, and they felt smooth, so the first few pumps of her chest were nevertheless pleasant to Marc, but slowly, Sophia was able to move a bit faster, making longer strokes as his precum was smeared across more of his dick and the inner sides of her cleavage.

He watched as his tip peaked out between the top of her breasts before vanishing once more, and so on. Slowly but regularly.

She applied a firm pressure, her breasts squeezing around his girth and hugging the contours, tugging against the corona from below on her upwards strokes, and rubbing down on his glans as she dropped her bust to his root.

Marc's breaths grew soft, repeated, and hot, whilst Sophia loosed quiet, seductive giggles here and there, at one point licking her lips slowly and erotically.

"Let's keep this interesting~" she remarked, pausing for a moment, and leaning forward to unfurl her tongue from her mouth, and channel spit down the muscle to drip onto his helm, the bubbled saliva adding some additional lubrication that she proceeded to lather into his skin.

Had he not noticed before, or was her saliva a bit... slicker than other girls? Maybe he was imagining things, or maybe it was a succubus trait.

Either way, it allowed her breasts to glide against his rod more smoothly than before, even as she exerted the same pressure... and moved with a slightly swifter pace. He could hear a slick sound, that of their flesh moving and rubbing together.

"Feels good, doesn't it~?" she said. "My perfect fucking titties~?"

Half the things she said were corny as hell, but the way she said them made them out to be the most erotic things possible.

It was also especially hard to criticise the one so expertly massaging his cock, Sophia alternating motions, moving her breasts in opposite directions to each other, Marc feeling his cock bend and rock as a result when one globe pressed against his root and another to his tip.

She briefly sped up, making him gasp, before slowing back down to let her previous pace. Then she slowed to a stop, all so she could let go of her breasts and shake her torso, gently slapping her mounds to either side of his member. It wasn't much in the way of stimulation, but it was still exciting, and her playful chuckling only added to the spice. She also knew not to let the technique last too long, quickly grasping her breasts and jumping right back into a pumping session, the slick sound getting to Marc.

"Fuuuck," he muttered. "My last girlfriend didn't have tits big enough for this."

"Good thing we met then~" she said, as she leaned forward to drool some more onto his cock. She applied this extra lubrication by rapidly slapping her breasts against the sides of his cock in succession, different to her torso shaking from before, similar, but rougher, quiet slaps reaching his ears.

After that, however, she squeezed her bust together around his shaft with her upper arms and reached out to grip his body, proceeding to pump his cock by moving her entire torso, hands sliding across his sides with a sensual, gliding touch.

It was then that he felt the familiar tugging sensation of her drain, but it was mild and superficial, enough to give him a fresh sense of fatigue, but it seemed like Sophia was being careful.

"I'm still tired from before, Sophia," he nonetheless warned, watching as small swirls of light spiralled around his cock and disappeared into the skin of her breasts.

"I'm only nibbling~" she purred sweetly. It wasn't too convincing, and he had a thought about how bizarre that exchange was, so casually referencing the fact she was effectively feeding on him right now.

But the tingling delight of her drain, mild as it was, only added to the overall pleasure, Marc rocking his head back as she worked her breasts.

Still, he glanced at her body, and couldn't help admiring the erotic and graceful way her body moved, so fluid, almost hypnotic even.

It gave everything she did an exotic quality, like she wasn't quite natural.

Which, after all of revelations of the day and the night prior, was entirely true.

He felt a pressure building in his loins, his balls tugging upwards repeatedly as climax neared.

"Sophia," he uttered. "I'm close."

"Don't hold back, this was supposed to be a quickie, remember~?"

Even as she said it, the way she slowed slightly but squeezed just that bit tighter told him she was savouring every moment.

Such treatment didn't take long to send him over the edge, biting back a moan so he wasn't heard from downstairs.

Sophia slid a hand up beneath his shirt to expose his gut, and moments later, with a stifled groan, Marc came, bucking up between her luxuriously sandwiching breasts, getting a few ropes on his stomach.

She pumped her chest in time with his throbs, milking his ejaculation to its fullest extent, before slowing to a stop once his tip made the last few dribbles, rolling down his glans.

The drain faded with the climax, though he did feel it spike at the moment of orgasm, something he had felt before.

Sophia teasingly squeezed her breasts around his dick a few more times before slowly pulling away from him, a slick, sticky sound of their stained skin peeling away emanating from his groin.

"Fuck, you're good," he murmured, watching his cock soften, and watching her sticky breasts splay away from each other in a provocative display.

"What'd you expect from a succubus~? This is practically instinct for us~"

She seemed comfortable with a cum-stained bust, but Marc was already starting to feel the sticky awkwardness.

"I guess... uh... you have a towel, or something?" he asked.

She simply giggled, and leaned in close and before he could even protest, he gasped at the touch of her tongue gliding up his cock and cleaning him of any residue, sliding onto his stomach as she lapped him clean, stirring some lingering vigour in his member.

Fortunately, she did not draw him into another moan-worthy tryst, leaving him clean enough for him to feel comfortable wearing his shirt.

"That was a dirty move," he grumbled.

"I know~" she said after making a lecherous display of swallowing his cum with a curl of her tongue. She licked her lips clean and smacked them, before looking down at herself.

In what should've been an awe-inspiring sight, Marc watched as his stain on her chest glowed, and then disappeared, absorbed into her body, Sophia letting out a sigh of appreciation.

"Sweet~" she praised.

"That's not fair," he mumbled.

She only giggled and leaned up to poke him in the nose.

"Some perks are succubus-only, bro~" she said, before finding her top and tossing him his pants, finding some shorts to wear over her panties so she was at least modestly presentable in Peter's presence. "Better go downstairs now."

"Y-Yeah," he agreed as he put his clothes back on, feeling strange; he'd just got an amazing titfuck from his stepsister, and he was feeling oddly... excited about the future. About the pleasures that awaited him with his demonic family member.

But for now, he needed to act like there was nothing so obscene and immoral between them in front of his father at least. He figured he could manage that.

He made for the door, Sophia in tow, and they made their way downstairs, where Maria and his father were in the middle of cooking dinner, some sort of curry chicken from the looks of it.

Peter looked over to them and gave a small, welcoming smile.

"Looks like you two are getting along," he said.

Marc flinched for a moment, and then let out a dry laugh.

"Yeah. Guess you could say I'm getting used to this whole thing," he said, though there were subtler levels to that statement.

"Good to hear. I was starting to worry about you," Peter admitted. "You were looking a little stressed of late."

'Gee, I wonder why,' Marc thought to himself.

"It's okay," Sophia chimed in, Marc having to keep himself from a kneejerk reaction of panic. Fortunately, for all of Sophia's deviance, she wasn't about to make Marc suffer here. "Marc and I just had a nice long chat. I knew he'd been kinda awkward around me, so I decided we had to talk about it. He was just anxious about this whole new arrangement, so I told him he had nothing to worry about. I just wanted to help. We hashed things out and I think we understand each other now."

Peter smiled at this, no doubt happy his son was feeling a little better about this new family life, but Marc was inwardly bashful as all hell, because Sophia had effectively told his dad exactly what had gone down between them... without revealing anything.

"Sometimes all it takes is a little talking," Peter agreed. "Dinner won't be too long, so don't get too comfortable."

"Yeah, yeah," Marc answered as he wandered over to the lounge area, Sophia joining him as he turned on the TV and flicked through the channels, before settling on the news just for background noise.

Sophia sat on the other couch, but she glanced over at him, and surreptitiously licked her lips, and mouthed the word 'tonight'.

That mere implication was enough to set a slight stir in his loins, which he willed down before anything awkward happened. It seemed that her playful, casual teasing was not going to abate any time soon.

If anything, it was probably going to get worse in some ways, leading Marc to wonder if perhaps he'd made a tiny mistake.

The sex was going to be wonderful, no doubt there... but was he going to survive her relentless teasing and casual seduction attempts?

Time would tell...

---

Dinner was, for the most part, uneventful, and for once Marc was a bit more engaged in the conversation, even if a little unnerved sitting next to Sophia, especially knowing something was going to happen that night. How could he ignore that? But, she behaved herself, so Marc was able to eat in peace.

Afterwards, once the cleaning up was done, he retreated to his room, as did Sophia, Peter and Maria staying in the lounge and chatting away over a glass of wine together.

For a little while, Marc even managed to put the planned encounter in the back of his mind and browse his laptop without much in the way of intrusive thoughts.

But as the clock ticked passed midnight, a few minutes later, he heard a soft knock at the door.

"Come in," he said, feeling his heart starting to beat a little faster.

The door opened quietly, and he turned around and shut his laptop, and he saw Sophia, wearing a set of grey, baggy pyjamas, long for the legs, but short-sleeved for the top, and through them he could tell she was once again lacking a bra.

The door clacked shut as she laid eyes on him, grinning.

"I can feel your heart racing, Marc~" she revealed in a low, seductive voice as she approached, her gait confident and sensual.

"Can you blame me?" he answered, feeling his penis already starting to strain against his underwear and pants, the same ones he'd worn since waking up after she gave him that hellish drain. He kept his voice low, not wanting to attract the attention of his parents.

"I never blame my partners, unless it's what they want~" she teased, approaching him as he still sat in his chair, her eyes drifting to his crotch where his pants bulged from the erection within, straining to escape and meet the being that brought it so much pleasure.

"Keep it down, would you?" he hissed with a little worry in his voice.

"Worried my mum and your dad will hear~?" she surmised, moving forward to seat herself on Marc's lap, drawing a gasp from him as she draped her arms over his shoulders and around the back of his swivel chair. "Relax, bro~ No one will hear if you keep your voice down~"

She began to slowly rock her hips, grinding against his crotch, her slow, soft lap dance earning more gasps from Marc.

"Not if... haa, you keep this up," he admitted. "You're way too good at this."

He was silenced when she pressed her pyjama-clad bust against his face.

"I suppose you're right~" she conceded as her remorseless teasing continued. Marc couldn't believe how good even a lap dance from her felt. If she was facing the other way, she could probably pull off an even better one.

Then she pulled her bust away from him a little, and she twisted around as she outstretched her open hand towards the door.

There was a small flash of light, and a ripple of distortion pulsated from her hand, another rippling distortion, with a slight glow to it, spread across the door and the walls, and then faded.

"There~ That should be better~"

"What did you do?"

"A simple glamour," she explained, not once slowing down the sensual, erotic grinding against his lap, her glutes, even as they remained covered by her pyjama pants, melding to the contours of his crotch and thighs in a tantalising manner. "Sound shouldn't easily leave this room now, but we'll be able to hear anything outside easily enough~ As long as neither of us scream too loudly, no one will hear a thing~"

"You can do that?" he asked incredulously.

"Glamours, charms, illusions, that's our power~ That and our skills of seduction and deception~ Either way, it's a weaker spell, older or more powerful succubi and incubi can conjure much more powerful ones, but this will do just fine to keep people from noticing... but I'm not here to tell you the unabridged history of my kind, and I don't think you're interested in that either~"

She leaned in close and pecked him on the lips, slipping a bit of tongue in there for good measure as her hips continued to gyrate against his groin. Marc murmured in response, finding himself turning to putty whenever she kissed him. It conjured memories of what she did earlier that day, when she gave him what felt like a Kiss of Death, sans the death part.

All the same, his arousal increased, and he couldn't help bringing his hands to her rump, roaming them across her fabric-clad glutes, feeling their pliant flesh resist his touch as she continued to grind against him. A soft, satisfied laugh left her, and she briefly shook her hips for him.

"My ass feels great, doesn't it~? C'mon, give them a squeeze, bro~" she encouraged.

He was still not used to her use of such familial terms, but at this point he couldn't be bothered to tell her off. He wanted a better feel of her, and he obliged her, sinking his fingers into her glutes, feeling how her cheeks resisted even more once he applied pressure. But the fabric was growing annoying, so he found himself doing something unexpected, and slipped his hands beneath her pyjama pants to glide his hands across her rump directly, feeling the smoothness of her skin, the warmth and the luxury.

She let out a little, pleased gasp and pushed back into his groping hands.

"That's it~ You can touch me all you want~ Get a good feel for me~"

"You're probably gonna fuck me into the ground, right? May as well have some fun with it," he admitted. She giggled, and brushed her hand across the top of his head.

"I don't want to overdo it~ I did give you a thorough drain earlier today, so you'll probably not have much stamina once I start, not with the treat I've got in store for you~"

"Treat? Sounds fun," he muttered as he pressed his face into her bust, Sophia returning the favour and pushing her chest into his head.

"Oh, it'll be amazing~" she crooned.

By now, Marc's erection was almost painful, it was practically trying to burst from his pants, it needed freedom. And Sophia seemed to sense this.

"I think I've gotten you excited enough~" she remarked sensually. Then she rose from his lap and pulled him up with her, guiding him over to his bed and laying him against it. She stood by the end, and proceeded to strip. Slowly.

It was a sensual dance, and every bit intended to arouse and excite him as everything leading up to this point, Sophia gliding her hands along her body as she brought them to the different articles of her Pyjamas, sliding her fingers beneath her waistband and doing a slow, wiggling gyration as she pulled them down, revealing that she was not wearing any panties, that neat pussy on display to him. She brought her hands to the bottom of her shirt as she stepped out of her pants, still swaying her hips like she was giving him a belly dance in slow motion, gliding her shirt off her torso and letting it drop behind her, finishing her dance with a flick of her long, silky hair out of her face, and cupping her breasts briefly, nipples erect.

That show was over, but she wasn't nearly done with him, biting her lower lip seductively as she moved onto the bed and began to crawl over him, gliding her hands up his body, and moving them together to briefly cup his erection in a sliding touch, making him gasp and prompting his diaphragm to flinch. But she didn't linger there, instead sliding her hands beneath the hem of his shirt. He flinched again as her fingers graced his belly, Sophia making every second a tantalising one as she slid further over him and took his shirt further up his body, putting a lusting shimmy through her body as she removed his shirt, briefly lingering her fingertips on his nipples, making him flinch and seeing a seething breath leave his nose. She giggled, and pulled his shirt off and dropped it off the side of the bed.

As soon as Marc's vision was empty of his shirt, it was taken up by her face as she cupped the sides of his head and kissed him, tongue slipping into his mouth and touching tips with his. There was a tingling spark at that, and then a warmth and arcing stimulation, along with that now familiar tugging sensation, a moan extracted from him as her kiss turned into a brief siphon of his energy, though it wasn't nearly as intense as the first time, their auras only appearing for a moment before she pulled away, a small wisp of energy rushing up along her unfurled tongue, which then slipped from one corner of her mouth, to the other in a salacious display, lips tugging into a grin.

"Fuck me," Marc groaned, feeling precum practically surge from his tip from the kiss; she may have Pavlov'd him with that draining kiss from before.

"That's the idea~" she teased, leaning over his body to plant kisses against him on her way back down to his groin, lingering on his nipples to give them sloppy pecks, sucking on each briefly and wiggling her tongue against each nub. The touch of her tongue elicited small and unexpected sparks of stimulation.

"What the hell?" he muttered breathlessly. He'd never had a girl lick his nipples before. He'd done that with one of his previous girlfriends, but never really thought about how the reverse would feel, even with the porn he watched and the results surprised him.

Sophia paused and smirked at him.

"Guys never expect their nips to be so sensitive~ It's a fun weak point~"

She then resumed her journey back down to his crotch, both planting kisses against his chest and belly, and trailing her tongue in salacious licks, until she was over his groin. She was deft in her removal of his pants, sliding them off his legs and pushing them over the end. She then marvelled at his straining erection within his underpants, the fabric shifting with each needy throb his imprisoned cock made, trying to break free of its confines, a large dark patch of moisture showing where his precum had soaked into the fabric.

She giggled and cast him a look.

"Aww, it looks so cramped~" she remarked with faux sympathy, leaning down to give the bulge a luscious kiss, pulling away with a hot lick along the throbbing tent. Marc still couldn't understand how she could tolerate licking cotton like that, but he also couldn't deny that it looked and felt pretty damn sexy.

"Do you always like staring at erections in guys' pants?" he muttered.

"It's like a present~" she answered, reaching up to cup the bulge and give it a gentle, squeezing massage, earning another gasp from Marc's lips.

Even if she apparently didn't plan on doing too much tonight, that didn't stop her taking her time, from teasing him as much as humanly possible. Maybe it 'improved the flavour', maybe she was just horny as fuck. Marc didn't know, though he wasn't about to complain.

Eventually, Sophia grew tired of marvelling at her packaged 'gift', and traipsed her fingers up to the elastic band at the top, and slowly peeled back his underwear to expose his cock like a flashy reveal, biting her lower lip as it sprang free. It had a bit of a musky smell to it, having ejaculated several times over the day, but it was clean for the most part.

It seemed to please Sophia though, the succubus taking a luxurious whiff, before leaning in to peck him on the side of his cock, then slipping her tongue down against his skin in a wonderful lick.

However, she didn't brush her tongue too far, keeping just above his bush.

"Remember what I said about shaving?" she remarked. "Get rid of this, and you'll be going crazy from what I can do~"

"You really don't like pubes, do you?" he quipped.

She gave his member another slow, tantalising lick capped off with a kiss to his frenulum.

"Most of us don't... it gets in the way, but we manage. Of course, you're not going to forget me, are you? So why not shave so you can really enjoy me~?"

She wrapped her lips around his glans in a soft suckle, as if putting a point in her argument. It was very convincing.

"I'll get to it as soon as I can, then," he agreed with a small chuckle that melted into a soft moan as her suckling continued. He felt her tongue repeatedly brush against the front slope of his helm, hidden behind her softly clasped lips, which she twisted gently from side to side in a reciprocating fashion.

She smiled around his tip, and then sank a bit further down, keeping the seal of her lips tight around his girth, tongue sliding against the underside of his manhood. She brought one hand to his member and gently stroked the lower half, using her other hand to brush her long hair out of her face before bringing it to his balls to give them a soft massage.

Her efforts were both gentle and intense, stimulating him in all the best ways, but paced and restrained so she didn't push him over the edge. It seemed this oral was just foreplay, because he knew already that she was more than happy to suck him to completion. She was very adept at it, and he'd only gotten head from her once before to know. Once was enough for him to know, and her skill here only reaffirmed his conclusion.

She pumped his member with her hand, stroking whatever wasn't taken by her lips, but she didn't use a full-handed grip, instead pressing her thumb and index finger together into a pleasing ring that slipped right up to below his glans whenever her lips retreated to just his tip, or pushed down against his bush as she took him further into her mouth.

Sometimes he heard vulgar smacks and slurps from her, accompanying an intense suction, but it always seemed deliberate, just adding a different stimulation to his captive dick, utterly enthralled by her ministrations.

Then he felt that tugging sensation, and a glow form around his girth, faint but visible, spiralling with currents that flowed into her mouth and face. A light fatigue filled him, and a shuddering breath was extracted from him as Sophia sipped his energy and caused a spike in pleasure, even if gentle.

However, as quickly as her drain had manifested, she ended it, easing the pleasure he felt and banishing the sense of fatigue. He always got a sense of danger whenever she used her drain. After all, it was literally feeding on his life force. Even she admitted it could kill someone if used too strongly or for too long. Of course, she assured him it was not easy to overdo it, that it had to be deliberate, and that was considered intolerable.

But in a way, that presented a sort of thrill to the whole thing, that she was a dangerous being, effectively 'eating' him every time they fucked. There were so many layers of 'wrong' and 'taboo' with their newfound arrangement that were proving... exciting to Marc.

He reached up and gently grasped the side of her head, raking fingers through her hair, though he didn't force her. He just wanted to touch her, to not feel so idle.

Even her hair felt incredibly silky, just another aspect of her inhuman sex appeal.

She popped off his cock, leaving it slick with saliva, giving it a few pumps with her hand, wrapping a few more digits around it, as she manoeuvred instead to lap at his balls, making him flinch from the unexpected attack. Then she suckled, though only lightly, not taking much into her mouth as she avoided his pubic hair. He really would have to shave it, it wasn't like he had any particular pride in it.

She slurped against his first jewel, and then she attended to the other, before finally pulling away from his junk, now glistening with a film of saliva in the glow of his room's ceiling light.

"I think that's good enough~" she appraised with another subtle lick of her lips.

"For what?" Marc asked.

She simply smiled and turned her head into his hand, kissing him on the palm.

"This~" she answered as she rose up and turned around, bringing her hands to her glutes as she presented her back to him... and most importantly, her backside, spreading her cheeks to show off her pucker, the ring of muscle a darker shade compared to the skin of her rear. She swayed her hips enticingly, the curve of her hips now very apparent to Marc.

"Anal?" he asked, almost bewildered.

"What's the matter~?" she retorted with a teasing voice, looking over her shoulders at him, long hair framing her face and partially hiding it. "Never stuck it in a girl's ass before?"

"No, never," he admitted. He had only had three sexual partners before now, and only two of them he could call girlfriends. None of them were willing to try anal, and he'd never insisted out of respect.

Now here was a girl with an incredible ass spreading her cheeks and preparing to drop it down onto his dick with only spit for lube. Then again, there was something different about her saliva, and she wasn't human.

"Then you're in for a treat~" she purred, dropping her hips down as she shifted onto her knees, pressing her pucker to his glans.

"Wait, don't we need actual lube?" he asked, starting to feel nervous, though he couldn't quite work out why. "And isn't there supposed to be prep or something?"

"My spit will do just fine~ And I wouldn't worry about prep~ This body is always ready to go, always clean, always tight~"

She punctuated her sentence with a wobbling of her hips, letting go of her cheeks to let them gently press to the sides of his helm, her swaying motion bending his manhood from side to side. His cock slipped against her pucker, instead slotting between her perky glutes. She seized this opportunity to start rolling her rump up and down his length, gyrating her hips to bend and twist his cock a little bit more.

He'd never had a girl hotdog his dick before either, and with her unusually persistent saliva, it was a smooth and erotic experience, feeling her cheeks gliding and hugging his cock, Marc taken by the fluid, hypnotic motions of her ass. She slid backwards and sandwiched his dick between her glutes and his gut, pushing hard enough he felt the curves of her cheeks brushing against his belly, and sliding far enough he felt her labia graze against the root of his cock, folds splaying to other side and adding a small, extra dose of lubricant.

It was fucking hot, what Marc was seeing, unable to hold back his groans of pleasure as she shook her hips and brushed his cock from side to side against his stomach like a pendulum.

Then, she rose up and let his cock rise with her, reaching around behind her to first brush her hair off her lower cheeks, long enough to reach that far, and then to grab his member and align it with her sphincter, Sophia giving a few final teasing wiggles, grinding her ring of muscle against his tip... before she slowly dropped down, not bothering to wait for Marc to give the go ahead.

He didn't mind. Or rather, he couldn't mind, the previous grinding foreplay having dazzled him a little... and now as her ass slowly took his cock into her passage, he was taken aback by the perfect tightness, more than her pussy, but not unpleasantly so.

Still, the walls of her anus clutched like a stimulating vice, and both of them let out moans of pleasure as she dropped down, though his were strained and hers were soft and luxurious, no doubt experienced in taking dick wherever she wanted. Adapted even, being a succubus.

It was warm too, and true to her assurance, her saliva kept the friction low and pleasant. She eventually settled on his lap, her glutes squashing down pleasingly against his thighs and crotch and the lowest parts of his belly, Sophia loosing a sweet sigh of pleasure once she couldn't go any lower.

"Holy... fuck..." Marc exclaimed, completely new to this experience.

Sophia glanced over her shoulder at him, and grinned.

"Nothing holy about this sinful ass~" she joked, rocking her hips and stirring his member up inside her rear, drawing another moan from Marc. It was a corny remark but he couldn't even consider trying to criticise her on it whilst that very genuinely unholy ass was giving him a hellishly good time, and she hadn't even started bouncing yet.

When she did start moving, the squeezing friction of her walls sliding against his manhood proved incredible, her ass clutching like it didn't want to let go.

She rose to his tip, and fluidly transitioned to more teasing gyrations, before dropping back down, keeping her pace slow such that her rump only squashed and melded with the contours of his body when they once more met, not yet fast enough to echo a slap. But even if she was keeping things slow, she refused to stay completely straight, repeatedly gyrating her hips in a circular fashion, or rocking them from side to side, forcing his glans to push against her tight, hot walls at different angles and putting ever so slight bends into his dick, not enough to hurt, but enough for him to feel the pressure applied by her anus press more or less in different areas, keeping the stimulation ever changing.

Marc couldn't help himself, reaching out to take a light hold of her glutes, prompting Sophia to wiggle her hips into his hands as he began to caress and feel her rear cheeks, feeling the skin stretch and the tissue beneath flex as she rolled her hips and undulated her spine in that hypnotic dance as she slowly rode him.

"Damn, Sophia," he remarked. "How the fuck do you feel this good?"

"Demon of lust and temptation~ We're meant to be perfect~" she answered with a soft, breathy voice, seductive and beguiling. "They say perfection makes it unreal, but what they don't get is even that is its own thrill~ It's uncanny, but you can't get enough~"

She was right there, feeling her walls clench around his dick as they bent and flexed with her motions, grinding and pushing into him, was proving to be an addictive experience. And just feeling her glutes beneath his fingertips, Marc sometimes digging his digits in to feel the pliant flesh fill the gaps and resist his pressure, it was enough to make him yearn to just embrace her, explore every inch of her.

Eventually she started speeding up, losing some of the twisting in exchange for the pace, now beginning to slap against his crotch and send her supple rump jiggling with each impact, Marc able to feel the waves of her skin, fat and muscle beneath his skin. Even now, her saliva still remained wet, long after any human spit would've been lathered in and rubbed into uselessness. But for all the tightness, for all the friction, it was still a smooth ride, even if he could feel her ass tugging his cock upwards every time she bounced. Though by now, his own precum was thoroughly adding to the mix.

"Fuck yes~" she crooned. "How's it feel fucking my ass~? You like your demonic stepsister bouncing on your dick~?"

Her dirty talk was as corny as ever, but her voice was dripping with pure lust and seduction, so even those silly words carried the weight of utter temptation.

"It's... fucking great," Marc said with his own voice now soft from the strain, and he wasn't even doing anything beyond feeling up her cheeks.

"Mmm, I bet it is~ I can feel every arc of energy in your body~ I can feel your heart racing, and I can feel your emotions~ You wanna fill your stepsister's ass with your hot cum, don't you~? You wanna give me every drop while I suck down your energy, don't you Marc~? Or maybe you just like watching this perfect ass bouncing up and down, watching it jiggle~"

Her dirty talk was getting cruder, and her voice was gaining a slightly harsh edge of pleasure in it. Maybe she couldn't lose control of her drain, but her arousal? That was something else Marc would have to survive. After all, the first time they had sex she lost enough control she revealed her true form to him.

He wanted to try and retort, call her out for her porno-grade slut-speak, but it just felt too damn good to string words together, especially once she started moving harder, pressing her knees against his legs.

Her hair flicked with her motions, the glossy strands glinting as they caught the light, Sophia briefly sitting upwards to reach behind and lift her hair up and out before letting it fall, the tips of a number of strands bouncing repeatedly off her lower cheeks.

Then, she paused her movements with a loud gasp, and rotated around on his dick, repositioning her legs, making Marc gasp and groan in surprise at the sudden and rather intense twisting sensation applied to his shaft, until she was straddling his hips and facing him, depriving him of the wondrous sight of her bouncing ass, but now letting him face her directly. Her eyes had an intensity to them, even if they were human and not their demonic red.

He recalled those features, her horns, her tail, her wings, everything that showed she wasn't human. And he could easily see them here, the expression she wore so aroused and lustful and beguiling, it was easy to believe she was a demon of temptation.

Perhaps easier than the fact she was his stepsister.

Her hands slid up his torso and came to rest on his chest, fingers splayed against his pecs. They were warm. She was warm, like she'd carried some of the hellfire of her heritage inside of her, or something.

She looked into his eyes, and Marc almost believed she was hypnotising him again, using that charm like she had when she made him go to sleep. But he didn't feel the tendrils of her influence snaking across his mind like then. No, her eyes simply had that effect on him.

"Ready for the finale bro~?" she asked him, her hair hanging down and framing both her face and his.

"Y-Yeah," he answered, earning a smile from her. She chuckled, and once more she began to move, her hips rising and falling, slowly at first, much like how she first started, though she was much quicker to get to speed than before, that slapping filling the bedroom yet again.

Marc prayed that 'glamour' or whatever she called it worked, though God probably wasn't answering this one. Satan, maybe?

His thoughts about those things were banished when she moaned above him, a sweet sound that commanded his attention.

What also commanded his attention is the occasional moments when she stopped, only to grind against his lap in a circular motion, pushing her curvaceous ass into the contours of his crotch and thighs, squishing against his body in all the best ways and stirring up his cock inside her hungry ass.

But between these moments of luxurious grinding, she returned to that vigorous bouncing, neither of them able to suppress their moans, though Sophia sounded far less strained and 'weakened' by the pleasure than Marc did.

Another added benefit of her new position was now Marc could see her breasts bouncing as she rode him, her globes as enticing as ever.

He couldn't help it, and reached up to cup her breasts in his hands, rolling his thumbs over her nipples and groping gentle, making her sigh in satisfaction.

"That's it, squeeze your stepsis' perfect fucking titties~" she encouraged. "Don't they feel good~? Just as good as when I wrapped them around your dick, right~?"

"Y-yeah," was all he could say, lacking the energy or the will to try and return her banter.

He rolled her nipples beneath his thumbs, and massaged her breasts with a desirous need, but even with them hanging before his face, he couldn't help but look back to her rising and falling ass, and soon his hands drifted back down there too, cupping her glutes and giving them a good squeeze as he moved his hands with her bouncing.

"You like my ass, huh~? My perfect fucking round ass~?"

He nodded, and she let out a seductive chortle.

"I bet you like every part of me~ Every second you're with me like this, you're drawn in to me~ You can't escape me, like gravity~ You want to feel every part of me~ The longer you're fucking me, the harder it is to get away... until you don't want to anymore~ You want to give in to me, to give all but your soul and you're life to me... but you want to spend your life with me, Stepbrother~"

Her dirty talk had taken a turn, and yet he couldn't feel anything but beguiled. If he could spend a life with her, and this was what he got out of it... then giving her a literal meal of his body every now and then seemed like a decent trade.

And as soon as he thought of that, he felt the tugging sensation of her drain, stronger this time than before, though not quite as it was with that kiss.

Auras formed around them, swirling eddies in his being drawn into her skin where they met, as he felt the wending passage of his energy from his core flow up through his cock into her ass. Whenever he saw his member, he could see it wreathed in a faint glow with the helical currents twisting up into her rear, small motes with trails leeching off of his skin and being absorbed into the aura that veiled her.

She bowed over him now, her hair encapsulating the peripherals of his vision to his sides, leaving only her face or the obscene copulation to be seen.

He was lost in her beauty, in her lust, and he began sliding his hands up her back, fingers trailing along her vertebrae, feeling how they flexed with her graceful yet debauched movements. And he felt her slide a hand up from his torso to cup his cheek, forcing him to look into her eyes.

A faint red glow appeared in the brown orbs, and she opened her mouth, starting her endless inhale. The back of her throat began to glow with a pinkish light, and his jaw parted involuntarily. Another flow of energy branched off that intangible 'core' just below his sternum, and he felt it flowing up through his throat, and then he saw the start of the stream of vaporous light cascade upwards, drawn into her gullet. It wasn't as strong as the kiss from... yesterday, he eventually worked out, Marc starting to lose track of time, though less than twenty-four hours.

It was surreal how fast things had moved... but this was more surreal still, and having two points of drain at once was still intense, atop of the pleasure that came from her anus taking his cock..

She let her tongue reach out to dive into the stream of energy, as if 'tasting' it, some of the luminous vapours coiling around her muscle as if absorbed into it. But she moved in to kiss him, and he felt some control over his jaw again. But he didn't resist. He wrapped one arm around her back and cupped one of her glutes with the other, and returned the kiss.

Was it romantic? He couldn't tell, that wasn't her deal. But it was intimate. Maybe even loving, in her own way. But it was much more hungry, more salacious, a sex act in of itself and just as arousing, and infinitely more stimulating thanks to the drain.

Still, the lower intensity allowed him to participate, working his lips away in return, swirling his tongue about hers to the best of his ability, melting into the two-pronged drain, the anal ride and the fervent kiss, their lips smacking together wetly every time there was a brief break in the liplock.

Her breasts pressed to his chest, and her hips rolled relentlessly upon his dick. He was leaking so much precum into her ass, her saliva was probably no longer needed. He was throbbing so much as well, and he could feel the pressure in his loins building, the pleasure mounting even as a fatigue set in from her drain, adding to the pleasure.

There was no chance for enduring this onslaught, and with a moan muffled by the kiss, he bucked hard into her rear, releasing a potent torrent of cum.

He felt... something around that core within him crumble, and there was a surge of energy drawn from him in sync with his orgasm, and with it a wave of fatigue.

But this also seemed to send her over the edge as she let out a shrill cry into his mouth, her body shuddering almost violently, the walls of her anus clenching and rippling in a way that was almost torturous during his climax.

And to top it off, he felt a surge of moisture sputter against his crotch, soaking into his bush and reaching the lowest part of his gut.

They spasmed together for a few moments that seemed to stretch into an eternity... and then her drain ceased. She relaxed atop of him, and he felt the grip of her ass loosen.

They were still for a few moments, and then finally Sophia pulled away from his lips, giving her own a salacious lick as the glow in her eyes faded. She smiled and chuckled.

"Thanks for the meal, bro~"

"You're welcome," he said breathlessly; compared to her, his chest was heaving, but she was already recovered. If it weren't for her sliding off his dick - and thus imparting some final pleasure into his beleaguered member which made him wince - he worried she would've kept going. It made sense though, she had just drawn literal energy from him, it was logical that it invigorated her.

But she was relaxed, and she let herself rest on him, her body soft and warm against his. He liked it, not even worried about feeling his cum trickling onto his cock and groin from her ass.

"Your dirty talk is dumb, you know," he said breathlessly.

"Is that why your mind raced every time I said something~?" she teased in return. "It's easy to 'skim the surface' of your thoughts when fucking like this~"

"Can't help it when you say it the way you do~" Marc admitted, still gently groping her ass as he enjoyed the afterglow.

"That's the trick to dirty talk~ What you say can matter, but how you say it matters most~"

He let out a breathless laugh in agreement, and then moaned softly when Sophia stole a kiss from him, the tiniest arc of stimulation as she added a minute draining touch to her smooch.

She pulled away and brushed some of her hair out of her face and his.

"So... how was your first proper day embracing this little relationship we've got going on~?" she asked.

He still had plenty of thoughts about this, some more introspective than others... but right now, in the embrace of his demonic stepsister, he could really only think on the good ones.

"Fucking amazing," he approved.

Sophia smiled, and leaned in to kiss him again.

"Just the tip of the iceberg, bro~"

After that, she giggled and snuggled into his neck, and Marc felt the fatigue set in.

He would be falling asleep soon, but as he laid there, gently rubbing Sophia's ass and her back, he couldn't help but think about what the future held for him.

After all, it was only the first forty-eight hours. A potential lifetime, that was something else entirely.

He couldn't help but smirk.

As scary as some parts of it was... he was looking forward to the challenges.