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Katsuki can deny it all he wants, but Denki knows he's enjoying this.
That's not a thing, he said, not even the porn stars like it, he said, there's no way I'm rubbing your gross juices all over my cunt, he said.
"Shit," he says, grinding harder onto Denki's pussy, hissing at the feeling of his engorged t-dick rubbing against Denki's dainty clit.
"Fuck," Denki agrees, throwing his head back onto the bed and forcing his hips to stay stationary. It's not that hard, what with Katsuki's broad hands wrapping around Denki's waist and holding him down for leverage, but fuck he just wants to rut up against him. "Feels good, right?"
"Tch." Katsuki is totally trying to hold back his moans, but Denki knows the sound of their pussies schlicking against each other is getting him off just as much as the feeling. "No thanks to you, princess."
"But you do—hnn, there—hah, you do like it."
Katsuki doesn't grant him a response, he just grinds down harder on the spot that had Denki moaning and distracts him. Any other time he might ignore the bait and continue teasing him, but fuck it really does feel good. It was awkward at first, but once Katsuki forced Denki onto the bed and controlled the rhythm, it felt fucking amazing. Katsuki feels amazing, his juicy cunt sliding desperately against Denki's. T worked wonders for Katsuki bottom growth in a way that hadn't happened for Denki but fuck, he's enjoying it anyway. It slips and slides against his clit and, every now and then, gets caught in his throbbing pussy, waiting for something hot and heavy to plunge inside.
"I'd like it better," Katsuki says with a hard thrust, "if you'd shut the fuck up."
"Not going to—haaaah." So not fair, Denki thinks, writhing against the bed as Katsuki pinches hard on one of his nipples. It's too much and not enough at the same time. He wants to pull away and he wants Katsuki to grab the other. It's confusing and so fucking arousing, he's not going to last much longer.
"Pathetic," Katsuki spits, finally starting to sound breathless and affected by Denki's drooling pussy. He sits on Denki like a throne, and when he throws his head back in pleasure, his preky tits stand to attention and beg for Denki's mouth on them. Of course, if he tried to move, Katsuki might kill him. Or worse: deny his orgasm.
Instead, Denki takes to doing what he does best: running his filthy mouth.
"Gods, Katsuki, you feel so fucking good. You're driving me crazy."
Katsuki bites his lip, but Denki swears he heard a little moan.
"You're going to make me come. Fuck me, Katsuki, please. I need it. I need to come all over—" Katsuki throws himself forward and covers Denki's mouth with the hand not pulling harshly on Denki's nipple. Like this, Denki is free to move his hips and stare defiantly at Katsuki, even though he wants to shiver and come unraveled under his harsh gaze.
"You talk too much, Sparky."
You like it, he wants to say back.
Of course, not even licking or biting at Katsuki's hand will draw him off. Desperate times call for desperate measures.
Katsuki hadn't thought to restrain Denki in any way. He was right, earlier, when Katsuki had called him a princess. He does enjoy being able to lay back and just take it, but not tonight. Not right now. Denki wants to just come already, and if that means grabbing onto Katsuki's slutty little waist and using it as leverage to rock their hips together at a frantic, sloppy pace, then so be it.
"The fuck are you—hnnng." Denki smirks against Katsuki's hand. Looks like he hit the sweet spot for both of them.
Of course, Katsuki doesn't take too lightly to Denki's challenge. Within seconds they're practically fighting each other, pressing hard and grinding with such harsh friction that Denki doesn't even feel the build-up to his orgasm.
It just. Happens.
And it happens explosively.
If the wet schlicking sound of their pussies rutting against each other doesn’t haunt Denki's fantasies for the next forever, the loud splash of his cum spraying between them definitely will. Denki hasn't squirted in ages, but it just won't stop coming. He practically seizes beneath Katsuki, grateful for the hand keeping him from screaming loud enough for the entire building to hear.
"Are you fucking pissing on me?" Katsuki hisses, his hips still moving frantically in search of his own orgasm.
Denki tires to say no. He tries to explain himself. But fuck, the orgasm is starting to crest and his clit is screaming from the overstimulated abuse. The squirt has slowed to a trickle, but it still clings to the curly hair of their pubes and lubes the slide of Katsuki's t-dick assaulting his clit.
That, and Katsuki still refuses to take his hand away.
"You filthy fucking whore," he growls. "You just fucking pissed on me."
He hadn't! He—well he wouldn't deny that he’s thought about it before, but he really hadn't!
"I ought to—" Katsuki cuts himself off with a moan, shoving hard against Denki's face and forcing his head deeper into the mattress like a punishment for making him feel this good. All Denki can do is lie down and take it, his body shaking hard and falling apart from Katsuki's abuse. "I ought to piss all over you, see how you like it."
Denki can't help it. Later, he'll blame it on the continuous thrusts against his overstimulated clit, but fuck if that isn't the hottest thing he's heard since Katsuki told him he'd prove that scissoring isn't really a thing.
"Oh, you'd like that, wouldn't you? Filthy slut like you would come just from that, wouldn't you?"
Yes. Yes he would. He won't let Katsuki know that, though. He tries to shake his head no, but Katsuki stills his face with a sadistic smirk and leans in close.
"If I hit the right angle, I might even piss inside you. How's that for payback?"
Oh god. Denki is going to come if Katsuki does that. He can feel his second orgasm already rising.
"Who knows? Maybe I'll stuff you full and plug you up. Make you walk around with a belly full of my piss as a punishment."
Denki fights hard against Katsuki's hand. If he would just fucking pull it away, Denki could tell him to do it. He could goad him into pissing all over his pussy and bringing them both to orgasm. But Katsuki loves a fight like he hates losing, and it seems he only takes Denki's muffled yells as permission.
He doesn't notice, at first. They're still both so soaked from Denki's first orgasm, but it's hot and wet and the stream is harsh against his abused sex. Katsuki lets out the loudest groan of the night as he pisses against Denki and rubs it in with his own pussy. The noise it makes is obscene, hissing and splashing all around them as Katsuki fucks against him.
Of course, Katsuki was right. Denki does come again, although without any squirt this time. Or, he thinks, anyway. There's so much liquid pooling between and beneath them that it's sort of hard to tell at this point.
"Hah!" he crows, "I knew you were a fucking slut!"
How he can talk when he's so clearly close to coming is beyond Denki, but watching the orgasm rise on his face is priceless. The rutting of his hips grows frantic as his stream peters out, almost like he's trying to come before he stops.
Which would be such a shame, really.
But Denki's a good fuckbuddy. Much more giving than his pillow princess title tends to give him. If Katsuki wants to come with a stream of piss between them, Denki will give him exactly what he asks for.
"Again?" he pants. "You're—fuck, you—" Katsuki can't finish his sentence, and although Denki thinks he'll die if he has to go through a third orgasm without a break, it makes his stomach flutter with arousal when he's so obviously about to come.
Denki doesn't move. Katsuki might kill him if he moves and wrenches away his orgasm, but he can do something to speed it along. He pushes hard, sending out a harsh spray of piss that splatters hard enough to mist their faces and, luckily, hits directly onto Katsuki's swollen t-dick.
Unlike Denki, Katsuki doesn't have a hand forced over his mouth to stop him from screaming. How embarrassing for him. Denki is totally going to brag about being the one to wrench that sound out of him to anyone who might have heard it.
Katsuki comes down from the high of his orgasm much faster than Denki, falling to the side of him with truly the most awful squelch of the wet sheets below them. Denki is uncomfortably aware of the warm wetness on his back, even if it had been hot earlier. Now, he finds it gross. As gross as she probably should have in the moment. God, they could have put a mattress protector down or something, now Katsuki has gone and totally ruined Denki's mattress.
"Ugh, this shit is fucking nasty," Katsuki complains, sitting up and ruining any small chance at post-orgasm bliss Denki had.
"Why the fuck did you—"
"It wasn't piss," Denki groans, forcing himself up on shaking arms. His legs still feel like jelly, but he knows if he doesn't clean up this mess soon it's just going to get worse. "You're the one who started that shit. I'm totally inno—"
"The fuck you are!" he shouts, shoving at Denki's shoulder and making him plop back into the wet sheets, getting it into his hair, god damn it. "You totally pissed all over me, dumbass."
"I squirted, Katsuki. It wasn't piss it was—"
"That's piss! Squirt is piss! Everyone knows—"
"It's not piss! It's squirt!"
"It's fucking gross, that's what it is! And you still pissed again after I did!"
"Oh don't act like it didn't make you come, Katsuki, you were just as into it as I was."
Denki managed to push himself back up about halfway through the argument. He and Katsuki share the same breath as they both glare at one another. Denki can't help but feel a rush of triumph flow through his veins as Katsuki struggles to come up with a rebuttal and just settles for glaring.
"Fine," he admits. "We both fucked up. Now are you going to help me clean this or what?"
"You're the one who did it first you should—"
"It's your bed!" Katsuki cries, hitting Denki in the face with one of his pillows, careful to set it back down on the clean, dry side of the bed after he's done with it. It's enough to snap Denki out of his weird post-nut anger haze and make him laugh again. Katsuki doesn't join in, but Denki isn't blind to the small quirk of his lips.
"Fine, whatever. Do you still have that vacuum thingy? The one that sucks out all the water?"
"Vacuum thingy," Katsuki mutters under his breath, getting out of bed and wrinkling his nose as the way a few errant drops of piss fall down his slick-sticky thighs. "Yes, I still have it. But first, we need to hose all this shit off of us. Get your ass in the shower, Dunce Face, I don't want to waste any more time or your mattress is going to smell like piss forever."
Denki perks up at the implication of showering together, only to quickly be shut down by Katsuki swatting at the back of his head.
"And no funny business. We don't need any more messes to clean up."
"But Katsuki," Denki says, fluttering his eyelashes. "Shouldn't it be easier to clean up in the shower?"
Katsuki stops in the bathroom doorway on the other side of Denki's room and glares. "You make any more messes, dumbass, and I'm making you clean them up with your tongue."
At that, Katsuki promptly turns around and makes his way into the bathroom to start their shower. Only, Denki doesn't follow. Too stunned at the thought of...
"Oi! Stop being nasty and get in the damn shower already!"
Denki scuttles to follow him, but...
Well if Katsuki truly didn't want him to make any more messes, he should have come up with a better punishment, shouldn't he?