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Unlimited Perversity Pt. 9 (High School DxD)
🕑 Added 2022-12-24 16:06:44 +0000 UTCPoll Winner
Themes: Mind Break, Anal Sex, Threesome
Summary: Part 9 of Unlimited Perversity. It turns out there's a reason some of Issei's efforts in reshaping Sona Sitri's body to both her and his desires have been undone. Serafall Leviathan is incensed that he's 'corrupting her precious little sister'. Issei is equally incensed... which leads him to challenge Serafall to a sex battle to decide things once and for all. He'll give her exactly what he gave Sona, and let the sisters bond over having their massive dump truck asses destroyed.
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“So-tan I’ve come for a vis- noooo! I JUST FIXED THIS!”
It’s been a little while since Issei has been caught off guard by… just about anything. But this? This catches him off guard. He’s lounging in the Student Council Room when it happens. The entire Student Council has been fucked silly by this point and are all sprawled out across the room. Some of them are face down, ass up. Some are leaned against the wall. Some are prone and some are on their backs, all with their limbs splayed out.
Only one besides him is still conscious. The Student Council President herself, Sona Sitri. The bespectacled devil is currently kneeling between his legs with her hands palm down on the floor, bobbing up and down on his cock. The way she’s kneeling there means her fat bottom is squished against the ground rather than resting on her heels. This is an important distinction, as it’s one of the first things that their uninvited guest sees.
A raven-haired Magical Girl in pigtails sparkles into being, complete with a wand and everything. She even does a twirl, only for the twirl to come to an aborted end as her eyes bulge out of her skull. Not at the size of Issei’s dick he can’t help but notice, however. No, her eyes bulge out of her skull because she’s staring down at Sona’s dump truck of an ass.
Issei furrows his brow in confusion. She just fixed… what?
Whipping her magic wand up, the Magical Girl points it at Issei’s face.
“You! You’re the one who’s corrupting my beloved So-tan! Stop changing her body! I keep having to change it back!”
Wait… what? Issei takes another look at Sona Sitri and finally realizes something the Student President has been sheepishly trying to hide from him all this time. Her tits… he’d already made them bigger before! Back with Rias! Ugh, he’d totally forgotten! And Sona… she’d let him just do it again, like it was no big deal!
Suddenly a little incensed himself, Issei scowls and gets up from the couch, dislodging Sona from his cock and making her shift to the side as he glares at the newcomer.
“And who the hell are you supposed to be?! I didn’t do anything to Sona that she didn’t want done! Which is more than I can say for you!”
The Magical Girl’s eyes widen at that, and her cheeks puff up in outrage.
“I am Satan Pink! So-tan’s big sister! I won’t let you have your way with her anymore!”
Wait… Issei knew this woman. He may or may not have met her before, he couldn’t remember. But… Sona’s big sister was Serafall Leviathan, wasn’t she? One of the Great Satans? Just as Issei is coming to that rather obvious conclusion, Serafall stops playing around quite so much. Her Devil Power begins to leak out of her and the pink-clad Satan snarls as she slashes her wand through the air aggressively and angrily. She sure looks ready for a fight.
It's an intimidation tactic, plain and simple, but truth be told… Issei actually doesn’t know that. All he knows is he’s being threatened, and more than that, his girls are being threatened. He’s laid claim to Sona and her peerage! And not even a siscon like Serafall is going to take them from him!
Oh yeah, now he remembers! He heard it from somewhere, maybe Rias, but Serafall… she was just as into Sona as Rias’ brother was into her. Tch, just thinking of Sirzechs and what he’d done pissed Issei off even more. His own Devil Power begins to leak out of him, both in response to Serafall’s intimidation display, and the reminder of that fucker Lucifer.
He’s a little distracted just thinking about the latter and how much he’d like to punch Sirzechs’ face in, so Issei sort of misses the way Serafall’s eyes widen and her knees buckle. A Great Satan, damn near collapsing under the power of a Reincarnated Devil. It was unheard of, but then a being so purely perverse as Issei, someone who embodied the Sin of Lust so perfectly… was also unheard of.
Issei doesn’t notice Serafall damn near collapse from his power, but Sona, who’s watching the whole exchange from the floor, definitely does. And for the first time in her life, Sona Sitri sees an opportunity to potentially collar her big sister.
“You can’t fight here! Both of you! You’ll destroy the school!”
Sona’s voice manages to cut through their growing anger, causing both Issei and Serafall to look at her. Issei frowns but nods in agreement, realizing that Sona is right. Serafall pouts mightily though, seeming to take Sona’s words as her taking Issei’s side.
“But So-tan, I-!”
And yet, Sona… actually interrupts Serafall and cuts her off. After an entire life being the one overridden, for once it’s the younger sister who talks over the elder.
“Sex battle! That’s what you both have to have! A sex battle, to decide who the better Devil is!”
Issei’s eyes light up at the thought, while Serafall goes bright red before pointing an accusatory finger at him.
“This is all your fault! You’ve put such naughty ideas in my So-tan’s head! So-tan, I can’t possibly take part in a ‘sex battle’, I’m a pure and innocent Magical Girl! I’ll lose all my powers if I do such a thing!”
Issei steps in there, grinning wickedly as Sona opens her mouth but falls silent upon seeing him move forward.
“Are you scared, Satan Pink? Scared that I’ll show you just as much pleasure as your sister?”
Then, before Serafall can respond, Issei throws down the gauntlet so to speak.
“I challenge you, Serafall Leviathan, to a sex battle. Winner takes all, including Sona. If you don’t accept, them you risk losing her forever because it becomes her choice which of us she wants to be with more!”
Serafall’s eyes bulge out of her skull at that, as she looks between Issei and Sona. The younger Sitri is kneeling on the floor beside Issei and leaning towards him almost subconsciously. It’s incredibly obvious who she would probably choose if she was forced to choose. And so, really… Serafall only had one option.
“F-Fine! I accept your challenge! B-But as the challenged, I get to choose the form of the sex battle! I-I choose anal sex!”
Issei blinks, his eyes narrowing at that. He did quite enjoy destroying Sona’s dump truck ass… but was Serafall confessing that she had a similar predilection? He hadn’t seen her full ass yet, but she did seem like she might be hiding a nice, big booty…
“F-For you see, as a Magical Girl my powers come from my virginity! A-As such, you’ll have to see if you can defeat me with that hole… or none at all! What say you, Issei Hyoudou?!”
… He didn’t believe for a second that Serafall Leviathan was a virgin. Her excuse sounded like complete hogwash, and he almost says as much. But thinking about it… he really has no issue here. So instead, he gives her a look and a nod.
“Deal. Let’s do this thing.”
Sniffing indelicately, Serafall keeps her head high in the air as she makes her way over to her sister’s desk. For a moment, Issei could hardly believe his eyes. Surely not, right? But no… it happens, against his expectations. Serafall Leviathan reaches the front of Sona’s desk and bends over it, flipping up the back of her skirt and pulling down her panties to show off a decently sized badonkadonk.
In doing so, she unintentionally mirrors the position he’d made Sona take just a few hours earlier when he’d bent HER over her own desk and fucked her ass silly. Issei holds in a chuckle at the sight but can’t help the derisive snort as he steps into position behind Serafall, his cock spit-polished by her younger sister’s own lips.
Looking back at him, Serafall glares heatedly.
“W-Well? What are you waiting for? Don’t think this’ll be easy! I’ll have you know I- eep!”
Issei supposes he could have let her continue and she would have likely made quite a fool of herself with whatever tirade she was about to go on regarding her ‘anal prowess’. But he just can’t be bothered. Serafall is making a fuss at the end of a long day. She’s cute, but her personality is shitty. She’s a female version of Sirzechs… and that’s the only upside because it means Issei can just fuck her into leaving Sona alone and letting her live her own life, rather than what he had to do with that rat bastard Lucifer.
That was all to say… he thrusts into her ass mid-sentence and doesn’t feel an ounce of regret in doing so. To her credit, Serafall Leviathan DOESN’T immediately break upon his cock. She’s clearly feeling it though. Her legs tremble and the pink-clad Satan gasps as he splits her cheeks and burrows into her bowels. Her ass, which is almost as big as Sona’s even without his help, jiggles as she quivers.
“I-I won’t… I’m not… I c-can take it! Don’t you dare look down on me, y-you bastard!”
Issei eyes Serafall with a dry look. She’s bent over her sister’s desk in front of him. He quite literally can’t NOT look down at her in this moment. Still, she’s a tough cookie. Even as he pounds into her from behind, fucking her ass just like he did Sona’s… Issei can tell that this much isn’t going to be enough to break her. She’s already adjusting to his size and his speed. She’s managing to adapt quite quickly to this position, in fact.
Which means he needs to change things up a little bit, plain and simple. He’s sure she’s inches away from breaking, but if he’s going to make her anally orgasm so he can win this sex battle, he needs to do something unexpected.
He pulls his cock back, but this time instead of thrusting forward a moment later, Issei grabs Serafall by the hips and YANKS her back into his dick. The Leviathan squeals, but that’s just the beginning. Pulling her bodily off of her sister’s desk, Issei proceeds to heave and lift, before spinning Serafall in midair. He corkscrews her on his cock, his dick never once leaving her anus even as she finds herself suddenly facing him.
Then, she comes down HARD on the ground. She’s way too tough for it to hurt her, of course. A normal human woman might have snapped their neck, but then Issei would never perform this sort of maneuver on a normal human woman in the first place. At the end of the day, he knew just how tough and powerful Serafall was. A three foot drop to the floor wasn’t going to hurt her.
It does momentarily stun her though, which is exactly what Issei is looking for. Stepping forward, he forces her into an unenviable position, with her ass high in the air and her weight now supported on her neck and shoulders. All the while, his cock remains in sphincter, penetrating deep into her bowels… as Issei begins to jackhammer in and out of her, fucking her in the butter churner position.
As hoped, this proves to be precisely what’s needed. Serafall’s eyes bulge, and then roll as she lets out a hoarse squeal. Her entire body doesn’t just tremble and quiver, it fully seizes up and shakes, spasming as she orgasms on the spot from the surprise sensations and the pleasure of having her ass so thoroughly dicked down.
Her unoccupied ‘virgin’ pussy proceeds to squirt and squirt… and due to her new position, her pussy juices spray all over Serafall’s face and tits, making a mess of her Magical Girl uniform as the Great Satan is coated in her own humiliation. She’s lost, plain and simple. With that, the sex battle is over and Issei is the victor.
But then, the terms were pretty damn clear. Winner takes all… INCLUDING Sona. But not limited to her. And frankly, Issei isn’t done just yet. As Serafall tries to catch her breath, he continues to fuck her ass, leaving the overly sensitive Satan to squeal and shake her head.
“W-Wait! D-Don’t keep going, I can’t… I can’t… CUMMIIIIING!!!”
Her squeals fill the Student Council Room as her eyes roll back in her head and her tongue lolls out of her mouth in a truly silly expression. Before Issei can answer her however, Sona inserts herself back into the situation.
“You don’t get a say in what Issei does to you anymore, sister. You lost… which means you’re his, just like me.”
Issei raises an eyebrow as Sona moves into position, planting her feet on either side of Serafall’s head and shoulders. Then, he watches as she looks down at her sister’s stupid expression for a moment before shaking her head with a sigh.
“I think it’s time we negotiated a new sort of relationship, Serafall. One that includes Issei from now on…”
And then, without further ado, Sona promptly sits her fat dump truck of an ass down on her big sister’s face, forcing Serafall to tongue her creampied anus while the Satan’s own ass is still being fucked. At the same time, Sona reaches up and grabs Issei by the hair, pulling him down into a tongue-filled kiss that he’s all too happy to return.
The two of them share Serafall like that, treating the Leviathan herself as their own personal fuck toy. The Great Satan is reduced to little more than a cum rag, though from the noises Sona’s making and the constant squirting Serafall is doing, she doesn’t mind it one bit. Indeed, Sona’s blushing, pleasured face makes it abundantly clear that Serafall is taking to her new task of eating out her sister’s ass with GREAT vigor.
That’s good, because after what Issei had had to deal with regarding Sirzechs and Rias, he’s not about to let another Great Satan have any sort of upper hand in their relationship with their little sister. Serafall Leviathan got half of a pass for one reason and one reason only… she was a girl.
Was that unfair? Almost certainly, but Issei didn’t care. As he finally finishes inside of Serafall’s ass, filling her clenching back door with his jizz, he pulls out and lets go of her legs. Serafall’s trembling, quivering legs end up splayed out all across the ground until Sona leans forward and lifts her big sister up by the thighs so SHE can put her own tongue between Serafall’s ass cheeks.
Smiling at the sight, Issei feels good about the events of the day. Serafall Leviathan has been put in her place, and he’s had his way with Sona and her entire peerage. All is well at Kuoh Academy. All is as it should be… in HIS territory.
Comments
Colin Peden
I'll admit, I was a bit surprised you didn't have Issei do anything to Leviathan, he could have bimbofied her body, just to prove a point to her. Great chapter though.
