Thread by @lemonaestheticc

(cw: cum inflation)
When Kacchan calls Izuku on a Monday evening, Izuku's entirely confused. They're friends with benefits, sure, but they're both working as pros, and Kacchan never calls Izuku over for sex on a work evening. It must be something serious then, and Izuku's +

rushing over to Kacchan's house without so much as a second thought. He has a spare key, so he lets himself in, calling out for Kacchan.
"'M in the bedroom," comes the muffled response, and Izuku almost activates OFA in his need to get there as fast as possible. He slams the +

door open, to reveal-
Kacchan, in a puddle of... milk? No, that's not milk at all, and Izuku knows it. It's- It's /cum/, but there's so much of it that Izuku can't possibly fathom how all of it /got there/.
"Kacchan, what-?" Izuku tries.
"A Quirk," Kacchan grits out. He's naked +

on the bed, and despite the bizarre situation, Izuku can't deny that it's /hot/. Well, of course it's hot - the object of his wet dreams is naked and /hard/ on the bed, panting like he's out of breath. It reminds Izuku of the delicious view he gets when Kacchan's fucked him a +

times already, and Izuku feels his body heat up just a little.
"U-Um, do I need to get you to a hospital, or-?" Izuku asks, only for Kacchan to interrupt him again.
"Fuck no," Kacchan spits. "I-I'm gonna be fucking hard until I-I cum /inside/ someone. All of it."
"Oh," Izuku +

breathes. So that's why Kacchan called him over. Izuku tries not to take in just how much cum is dripping down the edges of the bed as he swallows and says, "Okay."
"Okay?" Kacchan repeats incredulously, before his eyes widen. "No. Hell no! I called you over because you know a +

shit ton about Quirks and you're used to seeing, uh- that. You're /not/ taking all of that."
"And why not?" Izuku huffs, immediately rising to the accidental challenge. "If it'll help you, I can definitely take it! Besides, I-I plugged myself this morning, so I'm stretched. I'll+

be just fine, Kacchan, let me help you!"
"No," Kacchan insists, shaking his head. "You can /see/ how much there is, Deku, it's an insane ask-"
"Kacchan, if you don't me to, then I won't," Izuku says seriously, searching his eyes and trying to ignore the... image in front of him.+

"But if you're saying no because you think it's too much for me, then please, trust me."
They're both silent before a moment, before Kacchan clears his throat and locks eyes with Izuku.
"...Fine, /fuck/, you can- you can try," Kacchan manages, and Izuku's immediately stripping. +

It's easy to take his clothes off, and even easier to pull the plug out with a pop to the sound of Kacchan's aroused groan. "Deku, fuck, hurry up, I n-need to-"
"Mm, I'm right here," Izuku reassures, climbing onto the bed and ignoring the way cum coats his thick thighs as he +

straddles Kacchan's lap and grips his thick cock. "K-Kacchan, you feel b-bigger than usual-"
Izuku confirms it as soon as the tip presses into his stretched hole, and he can't help the loud moan that spills from his lips as he sinks down on Kacchan's girth. Usually, Kacchan +

clenches his fists and waits until Izuku's fully adjusted to the size of his cock, but today he just grunts a choked apology and grips Izuku's flaring hips, starting to fuck him at a brutal pace. He uses Izuku like his own personal cocksleeve, bouncing him up and down on his +

cock relentlessly. Izuku loves it, loves being used like an utter slut, and he can't hold back his desperate cries and pants as Kacchan rams into his prostate over and over and over again. He fucks him faster and harder and /deeper/, slapping his fat, jiggling ass and burying +

his face in Izuku's neck as they quickly approach orgasm.
"Fuck, Deku, you feel so fucking good, I'm gonna fill you 'til you're so damn full you can't /walk/," Kacchan growls, slamming against his prostate in the very same moment, and Izuku cums almost on command, his cum +

splattering over Kacchan's abs as his thick thighs tremble. He clenches around Kacchan's big dick, moaning helplessly with his tongue lolling out. Kacchan hasn't even orgasmed and Izuku's already gone, but then-
-Kacchan finally, finally tips over the edge, and starts to cum.
***

Katsuki groans loudly against Deku's skin, hands digging into Deku's fat ass as he spills and spills and spills in Deku. It's more intense than it was when he'd orgasmed all over his bed, and the way that Deku's clenching around him is fucking /addictive/. Deku already looks +

utterly wrecked, and Katsuki loves it. Deku's still bouncing lightly on his cock, his thunder thighs wrapped around Katsuki's waist. But Katsuki can see his belly, and as he continues to pump cum into Deku, he starts to see it - Deku's belly pushes out, starting to rounden in a +

small mound. But he knows that this is nothing more than the beginning, and as he continues to watch, trying to focus despite the overstimulated throb of his dick, Deku continues to fill out, getting bigger and bigger by the moment. His belly is properly swollen now, pressing +

against Katsuki's abs and roundening out even further.
"Deku, you okay?" Katsuki gasps against him, earning a whimper and a nod in return.
"Mmm, s-so full," Deku mumbles, trying and failing to rock his hips. His belly bounces a little with the movement, and despite the ache of +

his dick, Katsuki can't stop staring at the way he pumps Deku fuller and fuller and fuller.
"Fuck, you're getting so damn big," Katsuki murmurs, placing his hands against Deku's still growing, taut belly and rubbing in small circles. "D'you need me to pull out?"
"N-No," Deku +

manages, vehemently shaking his head. Drool drips down his chin as he fails to keep his mouth shut, his hands tightening around Katsuki's broad shoulders as he continues to get bigger and bigger, his belly full to the brim with Katsuki's cum. But Katsuki's not /done/, he's got +

even more to give Deku, and Deku takes it so fucking well. The nerd looks like Katsuki's fucking breeded him, and Katsuki can't help it; he loves it. His hands are still against Deku's belly as it continues to surge out with his cum, getting properly big and heavy. Katsuki can +

feel the way some of it threatens to drip from Deku's spent hole, the way he clenches to hold it all in as he's pumped up round and fat with Katsuki's cum. Deku's thighs are trembling, and Katsuki realises that he's almost done when he starts cumming /harder/. It's the same +

thing that had happened earlier, but Katsuki's too fixated on the way Deku's belly bulges with his cum. Deku's shaking, and it's not until he cries out in a broken moan that Katsuki realises that Deku's /orgasming/ again, his eyes rolling back from the overstimulation as his +

big, round belly is finally plugged full of all the cum Katsuki has to offer. He's in awe at how /gorgeous/ Deku is, so of course, he turns Deku around and pulls him up off his cock - because, as the cum gushes from Deku's fat ass, Katsuki knows he has another show to watch.
END.

Y'know usually when I see cum inflation, it's a lil bulge, so I decided to be a little self indulgent😌✨I finished an exam earlier today, and I have more soon, but I'll try and write more regularly! If you enjoyed the fuckery, please consider tipping me🥺
ko-fi.com/lemonaestheticc