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Katsuki watches in mild amusement as Izuku paws at his crotch over the tight costume, alarm pinching his eyebrows.
“Kacchan- Kacchan I think my dick is in my ass.” Izuku whines when Katsuki can’t hold back his laughter, clutching at his stomach as he doubles over, “It’s not funny! I can’t even feel my balls, I think they retracted inside me.”
Izuku pulls at the material of the leotard between his thighs, shifting on his feet uncomfortably. They’d been asked to come do a photoshoot, something about Miruko celebrating an anniversary for whatever the fuck, Katsuki honestly wasn’t paying attention. And he didn’t want to come either, but his dumbass boyfriend dragged him here anyway, so sue him for finding the humor in this karma.
As soon as they’d arrived, Izuku had been given a replica of Miruko’s costume to wear for the photoshoot, only made slightly less sturdy since it was just to wear for the shoot and not for any actual hero work. Katsuki had lucked out with not having to wear the same, but that didn’t stop him from enjoying the view that is Izuku in this tight little outfit.
Katsuki rolls his eyes as he manages to catch his breath, “You’re so damn dramatic. I could pull it off easy.” Izuku narrows his eyes, gaze darkening in a way that makes Katsuki shiver.
He steps into Katsuki’s space, forcing the blonde back until he’s right up against the table of snacks laid out for them in their private green room. Izuku grabs Katsuki’s slim waist in a firm hold, sliding his thigh high shoe covered leg between Katsuki’s own, pressing against his cunt.
“I’m sure you’d have a way easier time, Kacchan. You’re so amazing, after all.” Katsuki inhales sharply when Izuku runs his nose along the hollow of his throat, “I’d love to see Kacchan in this suit. I bet you’d look so pretty, baby.”
Izuku presses wet kisses against his neck, and Katsuki tangles his fingers in Izuku’s hair, uncaring of the way the bunny ear headband gets knocked loose and falls to the floor.
“Shit, Izuku…” Katsuki pants, clutching at Izuku’s shoulders when their lips meet, Izuku guiding Katsuki into a slow grind on his thigh while their tongues tangle.
A knock at the door has them both startling, scrambling away from each other when a woman pokes her head into the room.
“We’re ready for you now.” She smiles, and Katsuki scowls at the interruption. He straightens his clothes out while Izuku fixes his headband, subtly adjusting himself to hide the bulge in the leotard.
“Ah, thank you.” Izuku smiles at her sheepishly, and Katsuki will never get used to the whiplash that is Midoriya Izuku. Izuku leads the way out of the room, and Katsuki doesn’t even try to hide the way he admires Izuku from behind, watching every shift of his muscled back, his thick thighs, his perfect ass.
Katsuki bites his lip as the woman turns away, leading them down a hallway. He darts out quickly, pulling the stretchy leotard away from Deku’s plump ass and letting it smack against the other man’s skin with a loud snap.
“Ow!” Izuku whirls around, rubbing the irritated spot with bewildered eyes, “Kacchan, what- are you in middle school?!”
“I don’t know what you’re talking about.” Katsuki replies, pushing past Izuku with a smug grin. Serves that fucker right for getting him all riled up and not finishing the job.
The photoshoot is fine, if not downright boring. Katsuki had no idea he was going to be the only one not in costume, but honestly he’s not complaining. Making eye contact with Kirishima’s nutsack is going to haunt him for the rest of his life, but the most fun part about it was being able to stand behind his boyfriend while he bends over into various poses in that tight costume. For that, Katsuki would say it was definitely worth it.
When they finally make it back to their green room, Katsuki hops up on the table with a sigh, cracking his knuckles. Izuku pulls off his gloves before reaching for the zipper on the back of his costume.
“Wait,” Katsuki calls out, Izuku’s eyes immediately meeting his. Katsuki lets a smile curl over his face as he drags his eyes up and down Izuku’s body, eyes lingering on his thick thighs and trim waist.
Izuku approaches him with a curious look in his eye, “Oh? Does Kacchan like this?” Izuku asks, slipping his gloves back on and fixing his headband so the bunny ears point straight up. Katsuki’s face burns at the teasing tone, rolling his eyes as he bites his lip.
“Shut up,” Katsuki gasps when Izuku fits a strong hand around his neck, squeezing just enough for Katsuki’s mind to go a bit foggy at the edges.
“Ah, look at you.” Izuku coos, spreading Katsuki’s legs with a free hand so he can slip between them, “You want it so bad. Maybe I should keep the costume, huh?”
Katsuki whimpers when Izuku lets him go to pull his pants and boxers down, letting them fall to the floor in a heap. Izuku forces Katsuki to lean back on his hands with a push to the chest, and Katsuki licks his lips as the way Izuku’s cock fills out in the leotard, stretching the material to its limits. He wants that inside him so bad.
Izuku pulls the leotard to the side slightly, giving his dick room to spring out from the confining outfit. Izuku pulls Katsuki into a deep kiss, swallowing the blonde’s moan when Izuku rubs the head of his cock up and down his dripping pussy.
Izuku pulls Katsuki close with an arm around his waist, Katsuki’s arms curling over Izuku’s shoulders, nails digging into muscled flesh. Katsuki’s still soft from when they’d fucked this morning, so it takes almost no effort for Izuku’s cock to slip inside, Izuku swallowing down Katsuki’s choked moans.
“Izuku,” Katsuki gasps when Izuku bottoms out, grinding deep inside him. Izuku hums, planting his hands on the table on either side of Katsuki’s hips for leverage as he slowly begins to pull out before slamming back in with a wet slap. Izuku starts up a steady pace, fucking in deep with every thrust. Katsuki can’t do more than bury his face into Izuku’s neck to muffle his moans, nails catching on the material of Izuku’s leotard.
“You like this costume on me, baby?” Izuku growls into his ear, chuckling when Katsuki cries out as he changes his angle just slightly, now hitting Katsuki’s g-spot dead on, “I bet you were thinking about this the whole time.”
Katsuki shakes his head but it’s no use, Izuku’s already got this smug smile plastered on his face as he fucks Katsuki rough, punching moans out of him with every harsh thrust. Katsuki can feel himself already getting close, grabbing onto the fluffy fake tail at the base of Izuku’s spine as he shakes in Izuku’s embrace.
“Izuku, I can’t- I’m gonna- fuck!” Katsuki can’t help the way he cries when he feels his orgasm rush over him, digging his nails into Izuku’s strong shoulder while he pulls on the fake tail with the other. Izuku whispers words of praise into his ear the whole time, sneaking a hand underneath Katsuki’s clothes to rub a gloved thumb against his hip.
Izuku slows to a deep grind as Katsuki’s shivering tapers off, pushing the blonde into overstimulation, “Izuku, please,” He whines, pawing at Izuku’s back. Izuku just gives him a soft kiss on the cheek before lowering him against the table so he’s laying flat on his back.
“Shh, Kacchan, just take it for me, okay?” Izuku pushes Katsuki’s legs up with hands under his thighs as he begins to fuck into him again properly, Katsuki’s slick squelching lewdly with every thrust.
“That’s good,” Izuku groans, picking up the pace until he’s fucking into Katsuki hard, the table screeching loudly against the floor, “You’re so good Kacchan. Perfect, you’re perfect.” Katsuki whines at the praise, finally able to get a good look at Izuku from this angle.
His face is flushed red and sweaty, curls plastered to his forehead and temples, the headband crooked from his constant thrusting, bunny ears sticking out at an awkward angle. Izuku pants open mouthed with eyes fixated on Katsuki beneath him, drinking in the sight of the blonde losing his mind with pleasure. The costume sticks to him tightly, abs well defined underneath the material, shifting as Izuku rolls his hips with every thrust. Katsuki can’t get enough of the way Izuku’s balls hang out from the side of the leotard, shiny with Katsuki’s slick where they slap against his ass. Katsuki rolls his eyes back into his head at the thought of how Izuku’s muscular ass and thighs must look in this outfit, glistening with sweat and flexing with every movement.
“Fuck, fuck, Izuku please, please, please-”
Izuku curses under his breath, pulling a glove off with his teeth as he lets go of one of Katsuki’s legs to bring a thumb to Katsuki’s clit, rapidly circling the swollen nub as his hips begin to jerk out of rhythm.
“Come on, Kacchan, that’s it. Cum for me baby, come on my fucking cock-”
Katsuki can’t help the scream that wrenches itself out of him as he cums for the second time, unable to even voice a warning as he squirts hard around Izuku’s cock, the slick splashing up and wetting the front of Izuku’s costume.
“Shit, you’re so beautiful Kacchan, fuck-” Izuku forces his cock deep as he orgasms, cum pouring into Katsuki, warming him to the core. Katsuki whines as Izuku grinds deep into him, milking his orgasm from Katsuki’s still twitching insides.
Izuku’s cock pushes against his g-spot with every grind, making Katsuki’s toes curl so hard they begin to cramp, “Ah, ah, Izuku stop. Knock it off, fucker.”
“Okay, okay.” Izuku says, biting his lip as his cock slips free, cum slowly following. Katsuki pants as Izuku just stares at him for a long moment, cock twitching against his thigh.
“Don’t even.” Katsuki growls warningly, and Izuku gives him a small smile before leaning over to the end of the table to grab at a pile of napkins. Katsuki props himself up on his elbow as Izuku wipes the cum and slick from his own cock and thighs before moving onto Katsuki.
Once they’re both clean enough, Izuku helps Katsuki hop off the table and change back into his own clothes. Izuku does the same, pulling off the costume and changing quickly. Once they’re both dressed and getting ready to leave, Katsuki swipes the costume from where Izuku had left it draped over the back of a chair.
Izuku notices this, chuckling to himself as Katsuki stuffs the damp costume into his bag. “I was joking about keeping it… really, Kacchan?”
Katsuki’s face grows red with embarrassment, shoving past Izuku as he rips open the door, “Shut up, asshole!”