Parents' day had arrived for everyone.
Sirzechs had managed to come and dote on his little sister while the parents recorded the classroom activities.
Grayfia and Venelana were also present, for very obvious reasons.
"Rias, you okay?" Mitarai asked, seeing the stressed-out look on his King's face.
Rias nodded; "My brother is just so doting! Sure, it's nice to have family around, but they are just so overbearing it's uncomfortable."
"Hey! There's a sexy cosplayer in the auditorium!" someone shouted, with a whole army of boys rushing towards the location.
Not really having anything to do, Takashi followed the crowd as to who this cosplayer could be.
"I'm just curious really," Mitarai told Rias, already knowing how possessive she could be.
"That makes the two of us," She answered.
In the auditorium, the cosplayer was in sight.
Mitarai didn't need to be up close to see that she was small in stature. Her attire was magical girl clothing, with her holding a magic wand.
"Everyone, move out! This isn't a game!" Genshirou said, somehow getting the people to stop gazing at the girl.
"And you, this isn't a place where you can cosplay! Are you someone's parent?" Saji added.
"What, that's unfair?! What do you mean I can't cosplay?!" the cosplayer replied.
Mitarai had to feel bad for Saji; 'Being in the student council must suck. Still, who the hell is she?' he thought.
"You haven't been introduced to her yet, Mitarai! But she's the Leviathan Satan. Serafall Leviathan," Rias explained.
The doors opened up as Sona Sitri came in; "Genshirou, what's with the mess?" Before she got her answer, she looked at who was up on stage and gasped. "Oh no."
"So-tan!" the Satan screamed, flying forward and embracing her sister.
"Sister... why are you here?" Sona asked, dreading each moment.
Serafall only hugged her sister tighter, "Why wouldn't I be here, my cute little sister?! You didn't even tell me about it. I had to find out from Sirzechs-chan! I almost went to fight Gabriel in heaven because of it!" The last part was said a bit more seriously, but still in a childish tone.
"If you did that, this country would be destroyed several times over." Sona played along.
Mitarai couldn't help but look in shock; "Seriously... She's actually that strong. This devil cosplayer could wipe the floor with me! I'm in shock."
Whether it was perfect timing or not, Serafall noticed Mitarai and was already in front of him, her eyes narrowing at him, while the latter looked at her with a raised eyebrow.
Even being up close, Mitarai still couldn't see how the older sister of Sona could be a high-ranking leader of the devils and a crazy cosplayer.
The inspection didn't end just there, with Serafall looking him up and down.
Similar to many women before her, she inhaled his scent. The pheromones worked but her strength allowed her to hold back a possible blush and the moan she wanted to let out.
"So... is s-she done?" Mitarai asked Rias, who just shrugged, while Sona looked like she wanted to leave.
A smile came upon Serafall's face; "At last! I've wanted to personally meet the evil dragon who stole my So-tan's innocence! I've got a bone to pick with you! You took away my responsibility! You're almost as bad as Gabriel!" she stated, very childishly, while stamping her legs.
The rambling was too much for her, "I can't take this, sister!" Sona called out, running out for the door, with her older sister exiting rambling mode and going back into possessive sister mode.
After a very eventful day, it was time to go home.
Grayfia and Venelana decided to have another sleepover at the Mitarai mansion as they would be busy in the Underworld taking care of his kids, so some more fun time was there to scratch their itch.
In addition to that, Serafall decided to join in as well, still unaware of the reason why the busty maid and the MILF were sleeping over.
Mitarai couldn't help but groan however, could he really just tell a Satan that she wasn't invited?
Nah he wouldn't.
"So-tan... Keep kissing me right there," Serafall mumbled with a silly smile on her face as she turned in the bed, her loose magical pajamas undone and showing skin.
As she kept on murmuring, her eyes fluttered open and she took a moment to adjust as she was now fully awake. Her devil's senses picking up on all the loud noises.
Letting her senses guide her, she came to Takashi Mitarai's massive bedroom.
Venelana and Grayfia were by his side, except they were drunk and dripping with sticky love juice mixed with his sperm.
Serafall's brain barely processed that as she focused on Sona's frame rocking against Takashi's massive cock, an explosion of cum, and a loud screech from her usually strict little sister.
Splart! Splurt! Splurt! Splart! Splurt! Splurt… Splart! Splurt! Splurt Splart! Splurt! Splurt…
Ahh.. mmm..
This is what had Serafall's full attention, not even realizing Rias, Ravel, Akeno, Tsubaki & Yubelluna's fucked-silly pussies.
Right as Mitarai pulled out of her little So-tan, Serafall didn't even hesitate as she stripped out of her pajamas lazily and was drinking the dragon drip that fell out of Sona's pussy, mewling in joy at being able to do something so lascivious.
'Ah, I've always wanted to drink from a fancy cup like this! Just to find out that someone has filled it with such an addictive dragonic dick!' she monologued lewdly, getting off at hearing her little So-tan moan so lewdly.
Preoccupied with eating out Sona's creampied pussy, Serafall was unaware of the harem king behind her.
Mitarai looked her up and down, her ass bouncing side to side and up and down, making Takashi question. 'Hell! Why not?!'
Serafall gave a brief pause to cunt consuming as she felt Mitarai's legs against hers and a thick cock up her wet dripping pussy.
"Give me more of that! Inside my pussy" she begged, but it came out distorted as Serafall easily got horny and distracted from Sona's slit.
Mitarai rocked his hips hard straight from the start, not pulling anything back. Even if she was a virgin, the fact Serafall was stronger than him was enough to persuade him to go with pounding hard and use super speed.
"I'm going to take that as a good sign to continue," Takashi said.
Serafall managed to give a thumbs up in response, then she went back to gripping Sona's thighs and viciously devouring her vagina like she was hiding something in there.
Apart from another mind-blowing orgasm.
Being horny enough for her So-tan allowed Takashi to make his way further through her penis-loving pussy not that hard, which was definitely a surprise, but a welcome one to be sure as Mitarai reached out and gripped her nipples from below; her small stature helped him with that.
'Mitarai-kun is so good! This must be what Sona feels! How rude of her to leave me out of this?!' Serafall managed to complain coherently, before losing herself to the sex as her fingers began to tease Sona's anus.
Sona's whole body was being eaten by Serafall, enough to make her lose movement and control.
However, Serafall was starting to be put in the same predicament as Mitarai was becoming a beast in battle, clenching on her breasts like his fingers were duct tape, hooking his dick deep inside her womb and pulling her like she was fish in the water.
Eventually, even Mitarai was becoming too much for Serafall to handle, as she tried to get back to eating the girl's pussy, only to have Mitarai slam her in from behind and make her screech, squirting all over his cock, and already feeling another orgasm coming in.
From above, Sona gave a smirk as she saw the almighty Serafall Leviathan finally being dominated.
The sight was so hot, that, on her own, Sona decided to embark down and give the Satan Girl a kiss back, instantly making her body overreact and aggressively climax over Mitarai's cock, not to mention the continuing tightness.
'Yeah, no holding back!' Mitarai thought, watching the two of them in action as he jumped Serafall and sandwiched her voluptuous tits while he flooded her walls.
"Try not to lose any, Leviathan!" Mitarai teased as Serafall began to lose herself in the feeling.
When enough time had passed, Serafall was given a chance to breathe as she came out with the same fucked-stupid-ahegao face that Sona once had.
"I want to be just like Sona-chan, one of your Harem… I want Taka-kun to pump me full of dragon milk forever!" It would have been cute had it not been for how lewd and down bad it was coming from the mouth of Serafall Leviathan.
Later--------
"Rias!" Venelana called out to her daughter, trying her utmost to focus while riding Mitarai down and feeling him pump up into her like a ravenous beast.
"Sirzechs said... that it's time to unseal your other bishop!" Venelana gasped as she managed to get it out.
"Fucking horny dragon!" The MILF swore as she placed her arms against him and smashed down on him while biting her lips in lust.
Rias Gremory would have had a more surprised face had she not been blushing from Mitarai eating her milk-dripping tits like a starving baby.
'I would ask, but no time! Just more time of fucking Mitarai!' the girl's cunt dripped as her thoughts came together.
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Read Early at: p@treon.com/Cid_Kun
24 Advanced chapters already published at:p@treon.com/Cid_Kun