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Izuku felt the rough drag of brick against his back before he felt the hand in his shirt, twisting in an iron grip. His hands reach up automatically to wrap around the strong wrist that holds him in place, but he doesn’t try to pull it off.
“You think you’re fucking better than me, Deku?” Katsuki growls into the boy’s ear. He’s panting, sweat glistening off of his forehead, and Izuku vaguely remembers their late-night sparring match, remembers how he ended up here. He grins slyly at the other boy, feigned confidence in his face.
“I know I’m better, Kac-” he’s cut off by a hard punch to the jaw. He groans, head lolled to the side, until the same fist the hit him finds its way into his curly green locks and pulls. He stares into fiery red eyes and all he sees is anger, seething behind his gaze.
“Say it again and see what happens,” Katsuki warns him. His clenched teeth turn into a smirk and a shiver runs down Izuku’s spine.
“I said,” Izuku starts, his grip on the wrist tightening, “I’m better than you, Kacchan!” The greenette expects another punch but it doesn’t come. Instead, he’s thrown to the ground, knees scraping against the curb. Izuku looks up from his position crouched on the ground and he sees something in Katsuki’s eyes that he’s never seen before, something he can’t quite place, but it sends another shock down his spine and one in a less savory place, too. Katsuki towers over him, watching his prey, and then takes a step. Izuku takes off running.
Red sneakers pound against pavement as he sprints down the road. The only light is from the street lamps flickering down on him. He doesn’t use Full Cowling; he doesn’t need to, doesn’t want to. He’ll gladly play the part of the prey, just for Katsuki.
He keeps running until he doesn’t hear anyone behind him, and makes the mistake of looking back. A blast knocks him back into an alley and on his ass as Katsuki glowers down at him. He moves to get up but Katsuki knows better this time, and he crouches down and pulls Izuku by the ankle until he’s underneath him. Izuku lifts his leg to kick but Katsuki grabs that, too, and traps his ankle under a combat boot. His fist comes up next but is stopped as well and soon enough, Izuku’s wrists are pinned above his head by one of Katsuki’s strong hands.
“You think you’re so fucking great, but you’re just pathetic,” Katsuki spats. He shifts so he’s seated on the lower half of Izuku’s abdomen, effectively trapping him. His free hand roams across the other boy’s chest and Izuku arches into the touch. “You’re just lying here, taking it, practically begging for it. You barely even put up a fight,” he snickers and leans down close to Izuku’s ear, breath tickling his neck, “I bet you wanted this, didn’t you?”
Izuku whines in response and grinds against the bit of Katsuki’s ass he can reach. He’s painfully hard and he can see that Katsuki is, too.
“C’mon, Deku, show me how much of a pathetic whore you are. Tell me how much you want it.” Katsuki smirks down at him and Izuku just can’t take it anymore.
“Please, Kacchan, I want it so bad, please, I’ll do anything,” He babbles, hips jerking upwards in search of friction. Katsuki grinds back on Izuku’s crotch and the boy lets out a loud moan. He’s vaguely aware of Katsuki’s chuckle above him, but he can’t bring himself to care. All he wants, all he needs is Katsuki to fuck him.
“You’re disgusting,” Katsuki states flatly but grinds back again anyways, pulling another whine from Izuku, “it’s about time someone puts you in your place.” He doesn’t wait for a response before he’s flipping the boy over onto his stomach, pinning his hands above his head with one hand while the other tugs down his shorts. Izuku feels the asphalt digging into his knees and his arms and wiggles a little in protest.
“Kacchan, the ground hurts,” He voices his complaint and is met with a hard slap on his ass. He lets out a squeak of surprise and tries to pull away, but Katsuki’s grip keeps him in place.
“You’re gonna deal with it,” Katsuki slaps his ass harder this time, “or I’m gonna give you something that really hurts.”
Katsuki lets go of Izuku’s wrists in favor of getting his belt off, leaving the other boy ass up. He thinks about running, about fighting back, but he wants this so bad, no matter how much he tries to convince himself he doesn’t. He’s never been bothered by pain; even as a kid he was able to take a lot of pain, though most of it was caused by Katsuki back then, too. Maybe he just likes when Katsuki hits him, he thinks, maybe it’s just because it’s Katsuki.
He doesn’t have long before the hand returns and he’s pinned once again. Katsuki’s hard cock rubs against him from behind and he can’t help the moan that escaped his lips.
“Yeah, you want my cock, don’t you Deku? A little bitch like you is gonna have to beg for it, though.” Katsuki ground his dick against him especially hard and groaned. Precum pearled at the tip of his dick and he wiped it against Izuku’s pale, round ass.
“Kacchan, please, just do it already,” Izuku whined, trying to push back on his cock. Katsuki dug his fingers into the swell of Izuku’s ass, feeling the soft skin beneath his palm. Izuku belonged to him and he knew it.
“I fucking hate repeating myself,” Katsuki growls behind him and smacks his ass again, pulling a cry from Izuku’s throat, “so beg, slut. You want my cock that bad, you need to earn it.”
“Fuck, please, Kacchan, I need your cock inside me! I’ll be a good whore, please just fuck me!” Izuku cries, and Katsuki knows he can’t tease him any longer. He spits onto Izuku’s ass and wipes it around his entrance with the tip of his dick before pushing the head in. He sighs pleasantly at the warm feeling of Izuku around his dick and keeps pushing slowly inside. He’s so hot and tight, and yet so slick and Katsuki can’t help but think Izuku might have prepared before he came.
“You know, I was just dirty talkin’, but I think you might actually be a whore, Deku.” He laughs sadistically and thrusts the rest of the way in. Izuku practically wails at the feelings, revels in the feeling of being stretched around his rival’s dick. He barely registers when Katsuki moves his arms. His hands are no longer pressed against the ground, instead being pulled back against his back by Katsuki’s big hand. His face hovers barely an inch above the ground, held only by his companion’s grip on his arms. He longs to reach down and stroke his own dick, which he knows is dripping with precum.
“I’m gonna fuck the life outta you, Deku.” Is all the warning he gets before Katsuki starts fucking into him. One hand on his hip, the other holding his arms, Katsuki sets a brutal pace. He pulls out of Izuku by the hand on his hip and thrusts back in by pulling Izuku’s body back to him by his arms. Every thrust goes deep inside him, rubbing against his prostate, and Izuku lets out a sound that can only be described as a scream. Words and praise fall out of his mouth like a leaky faucet, a stream of Kacchans and pleases, begging for him to fuck him harder, faster, deeper. Katsuki replies only with a renewed vigor of his hips, the slap of skin on skin stinging deliciously.
“Kacchan, Kacchan, I’m gonna cum, I-I- I need to cum, please pleaseplea-” Izuku cries out and Katsuki tells him to shut the fuck up , but pulls him up harshley by his arms until he’s flush against his chest. He wraps an arm around Izuku’s chest while his other hand wraps around his cock, and the boy is gone. Izuku cums with a cry of Katsuki’s name, thick white ribbons coating his fingers and the ground beneath them. Katsuki’s teeth find purchase on Izuku’s shoulder and he bites down and fucks into him, his own orgasm following only seconds behind. He lets his mouth go slack when he tastes blood, then removes his arm from around his rival’s front. Izuku falls face first to the ground, panting like a dog in summer heat and whines pitifully when Katsuki pulls out of him.
Katsuki stands and fixes his pants and belt back around his hips and stares down at the mess of a boy beneath him. He lets out a laugh without humor before turning to leave the alley. He calls over his shoulder to Izuku.
“I’d clean yourself up before Aizawa comes to scold us for fighting. Let’s do this again soon, yeah?” His question isn’t really a question, more like a reminder. He knows Izuku where go wherever he commands, just like a good little slut should.
Izuku is thankfully coherent and slightly cleaned up by the time Aizawa comes. The teacher sends him immediately to recovery girl; it’s a fight with Bakugo Katsuki - there’s obviously going to be injuries, and he knows this. Don’t think this over , Aizawa tells him, you and Bakugo are gonna get it when you get back to the dorm . Izuku retreats with a little yes, sir.
Izuku is covered in scrapes and bruises but they can just wave those away, say they’re from their little fight, have recovery girl kiss them away without a second thought. Only Katsuki and him know what they were really about, know how much Izuku loves them. Only they know about the bruises on his ass and the teeth marks on his shoulder. That’s okay, though. Izuku’s happy to have their little secret, and Katsuki is, too.