After Zephyr and Mary finally had children, they had to decide who would succeed the family and who would support their sibling in surviving the cruel and treacherous Hell where Demons lived.
When Zephyr had his first child, all he wanted was for his offspring to be strong. That's why he put a high amount of his vitality into his wife's womb by reversing his 'Drain' ability to bestow life force instead. This caused a peculiar incident to happen.
A child was born, but this son of his didn't seem to have any similarities to Demons or Humans. He was too absurdly strong to be a Human, and too lacking in demonic bloodline purity to be a Demon.
Even though the one who should've stayed in Hell was the child with more bloodline purity, it became a hot topic among Demons that instead of the untalented daughter Zephyr had afterwards who didn't inherit his grand talents in draining life from others, oddly enough, the eldest son was given the right to great authority as the Commander's heir.
The two siblings were separated at birth, but were still able to talk to each other as both their 'Home' would always be with their parents. That, and that Zephyr would regularly use his son's life force to fill the stomach of his beloved daughter using Drain.
Theodore, the eldest son of the Montblank military family that controlled a seventh of Hell's grand army didn't hate his little sister, Anna, as he grew quite protective of her as she shared good times.
Anna would tell him about life on Earth while he would silently listen so he could understand her.
'Dad says that we both might not grow up as normal people because of our heritage...' Theodore thought as he watched his little sister recount her experiences on Earth before going to sleep.
In truth, he couldn't bring himself to tell his sister what school in Hell was like, as the place was so insane that no one with their head screwed on straight would be able to leave there with an intact mind, which was the source of many of his trauma.
As he grew up with Lust Demons, he wasn't exactly unfamiliar with the social structure between Demons. Unlike Earth, no one really needed to like each other or even cared if they killed one another.
All that mattered was desires, which was something Demons followed more than laws or reason. They enjoyed betrayal, violence, sexual acts, all to the point it became engraved into them.
While in middle school, he was always fighting against the common students of the Wrath Demon lineages who had heard about him. Though none of them ever won against him even after they cheated. His status only made him a living target.
Still, he was able to survive and even made a few friends despite not trusting them whatsoever.
It was a strange relationship. He and six other kids got along well because their families were also Demon Commanders like his father. The only reason they could get along was due to the political structure of Hell making fellow Commanders get along regardless of any anything else. This gave them room to at least speak as if they were on good terms with each other without any schemes.
"Theo, you did a good job!" A six-armed Wrath Demon laughed, who was part of the Asuras.
Underneath the youth before him lay a bunch of Demons who all picked a fight with him. Most of them didn't come from the higher 'Sin Species' but were more like Lower Demons that varied in shape and appearance. Some were part bull, some had long horns, some didn't, and others were even lizards. There was no constant among them.
Everyone was different without exception, and only those with strength among them were considered Higher Demons worth speaking in the same breath as the seven 'Sin Species' that ruled over Hell.
Some of those Higher Demons were within the mountain of unconscious bodies, all groaning after having their heads smashed in with a fist that couldn't possibly belong to someone who looked so 'Human'. It made him seem more like a monster.
Even his six-armed friend was a little afraid of him as he watched the youth wipe blood of his face.
It was at this moment that he met a girl who had a significant impact on him he'd never forget. It was as he was walking back home after a day of being challenged by nearly half his school did he come across a girl in a white one-piece dress with horns.
Immediately, he was entranced by her, wanting to become closer to the girl, but forgot his father's advice. Girls of the Succubus Species were the most likely to not be trustworthy as a partner.
Theodore learned this the hard way after getting to know the girl and genuinely forming a close bond with her, to the point that they even started dating and having sex after entering Hell's high school.
From what he had heard, this was a typical relationship in the Underworld and there wasn't anything strange with skipping class just to have intense sessions with a Succubus who preyed on the vitality of even their fellow Demons in Hell.
What no one bothered to tell him, however, was the obvious 'normalities' of a relationship made in a world as depraved as Hell, which ended up causing significant psychological damage to the youth.
One day, he went to look for the 'pure girl' who he decisively chose to forget the name of. Even though she was supposed to be HIS girlfriend, she didn't believe her body was solely for him alone.
"Ah~ Ah~ ❤️ More~ MORE~! ❤️" She breathed heavily as she enjoyed 'eating up' the Higher Demons who were laying on the ground in a gym closet, waiting for her to move on to her next 'meal'.
Something inside Theodore broke that day as he looked at the ecstasy on his childhood friend's face. The next day when he confronted her about this, all he got was a smile and an innocent look.
"What's wrong? This is just normal, right? Doesn't the feeling of 'sharing' me intrigue you? I'm sure it feels nice~" She spoke in the same tone as usual while treating him the same as she had before.
The way everyone reacted made him feel almost as if he was the one who was crazy for wanting his girlfriend to only be intimate with him. He couldn't understand why he didn't 'enjoy' the feeling of resentment from having his trust betrayed by another. Though he kept this trauma hidden from his family as he grew up, maturing faster as he realised that his 'Human' belief's were hurting him.
But no matter how long he lived amongst the Demons, he was unable to ever adapt to them.
Breaking up with his girlfriend, he became much more reclusive and quieter on the outside while staying friendly with others at home. The stark difference was like night and day. At home he was mischievous yet polite, while outside he was ruthless yet indifferent to others as if everyone around him was beneath him... Which actually made him much more popular among Demons.
His aloofness and despise against Lust Demons in particular even made them more into 'his type' of character. It was an unprecedented event that made even Theodore himself unable to respond.
So he just shrugged it off and graduated Hell's high school without much of a fuss, becoming more able to use his influence as he went to the Sin Academy, which was populated with the many Sin Demons and made his way up the ranks.
His personality was distorted somewhat as the cruelty of the world around him rubbed off on him.
He was no 'pure' youth, and was someone who didn't shy away from the mundanities of Demons.
He was popular without question, but there was something he felt was missing in his life. It was while he was ruminating on what that was did a girl who seemed like a 'gal' described by Anna came walking up to him as he was laying on a bench.
The girl wasn't anyone special, just an average Succubus who didn't seem to find anything wrong with wearing clothes that made her already attractive body stand out even more than usual.
If he was to say one thing about her, then that would be that he could sense no 'hypocrisy' from the girl as her body seemed to scream: 'I am a b*tch who will sleep with anyone willing!'
Not in a desperate way, but more in an enticing way that was quite refreshing after seeing many Succubi act like angels before making him almost puke with their depraved act. She was like a high-class prostitute who was sexier than most.
He had to admit that she was actually quite beautiful and hit his strike zone in appearance.
As he was thinking that, she finally got to the bench he was laying down on and made eye-contact with him. He knew what was going to happen and sat up, but was then mildly surprised.
Without warning, the gal with blond hair and a white T-shirt not doing much to hide her flawless body straddled on top of his waist. Her pink and white lingerie became more visible as she smiled at him, asking a familiar question many asked before:
"Do you want to go out with me?" Her seductive charms worked to the max as her rear sat on his thighs. Even the girl herself became shocked as she found the density of his muscles to be abnormal, which was well hidden by a loose shirt.
She didn't notice at first because of his sleeves, as it only became clear to her after sitting on his lap while putting her hands on his shoulders and chest on his own that he was strong. The rumours she heard about him didn't seem to be a lie at all.
She heard the youth was the dominant type, but was fully willing to be a submissive to get as much vitality she could get from him as she wants. The only thing she needed him to do now was fall for her, which she truly believed would work out.
Unfortunately, Theodore wasn't interested in being betrayed again after taking a Demon as his girlfriend. He'd rather have casual sexual encounters and be 'bed buddies' with her.
But just as he was about to refuse, an idea appeared in his mind as he looked into her eyes.
Despite being a Demon, she was certainly more honest compared to the fake 'pure girls' around.
This around a rare gentleness in his heart as he found this mere 'chick' who had yet to see any dangerous Demons that went way too far in their depravity amusing. He could tell from the way she looked at him that her ulterior motives were clear.
It was obvious why she approached him, yet...
"Why did you approach me?" He asked anyway despite knowing the answer this this already.
"Because you're so cool~" She looked at the future Demon Commander who had a really high rank.
If she could sway him, she'd get a lot of benefits.
The one most enticing to her was a large, almost endless amount of life force others couldn't touch.
Her predictable and ordinary answer made him mood better as he finally raised his hands to reach out to her. When his hands touched her body, she shivered after sensing the enormous vitality within him. It made her weak for a second as he grabbed her back and lowered her head closer to his. A smile appeared on his face as he whispered:
"If you can follow some conditions, then sure."
It may not be necessary for Demons to abide the promises they gave to Humans, but the promises they made to each other held a greater significance to Demons. This was why they were extremely careful regarding what they agreed to.
If they were tricked, they can only blame themselves. After all, Demons were all wicked.
The Gyaru understood this as well, but she was bold enough to ask just what he had in store:
"What conditions?"
"Firstly, you have to always be honest to me, and must never tell a lie, are we clear on that?" His voice trembled a little, remembering the strong resentment he had towards his ex-girlfriend.
His hands unconsciously clenched tight, which accidentally tore a while in her already short skirt.
"Okay." She was a little scared, but still thought it wasn't really that bad to be honest with the youth.
It wasn't like he asked for her life force.
"Secondly..." He then continued by whispering the rest of his second condition into her ear.
The words he spoke made her eyes dilate, making it clear that what he asked her was outrageous.
"You can leave whenever you want to in future. I won't stop you if you decide to break up with me."
"Really...?"
"I'm a nicer Demon than most would think... After all, not everyone respects Succubi these days." He spoke while letting her get up, then placed her beside him on the bench as he smiled at her.
Theodore suddenly pointed at an Asura from afar.
"What about that person?"
"I've heard rumours he killed a Succubus who tried enticing him and tortured her for amusement." A chill ran down her spine as he turned to continue after pointing at another handsome Demon:
"That guy over there abuses a Succubus who has the fetish of a dominator than a submissive, and the guy next to him took a younger Lower Demon and forces her to mate with him unconcernedly."
She became even more fearful after he finished. It was then he turned to her and finished by saying:
"Next time, make sure you investigate the guys you approach. I know enough about Lust Demons to know not all of them are into the same fetishes others might think they have." He gave some genuinely helpful advice to her out of concern.
"...About your two conditions."
"Yes?"
"I'm a submissive type, but I don't like pain."
"That's fine. I don't like hurting others."
"Then can you also be honest with me as well?"
"Sure. What do you want to know from me?"
"Not ask. I just want to request you to protect me."
"I'll never hurt you, and will never let others hurt you. Is that okay for you? Do you agree or not?"
"...I agree."
"Great!" He laughed, feeling more at ease as he leaned onto her body and hugged her gently.
She felt too soft, almost as if she was boneless. It was thanks to him also being a small part Lust Demon that her charms had less of an effect of him. The gal found herself feeling odd as she could sense that he was opening up to her thanks to agreeing to his conditions. The warmth of his embrace was extremely foreign to this Succubus.
Feeling odd, she returned this non-sexual hug and closed her eyes as she was feeling tired.
It seemed like an upheaval was to happen next...