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Nice and slow, that's it…
Katsuki drew a roughened palm up his cock, massaging and bringing it back down. Groaning, his head rolled back against the wall, a small whimper escaping him. Finally, his roommate was gone for the night, leaving him to enjoy the company of his hand alone; not even that shitty Deku could ruin it.
Just then, four loud knocks banged on the door, startling Katsuki and breaking the orgasm that threatened him. It faded back to nothing, Katsuki left on the edge, now pissed off. Throwing a towel around his waist, he clambered off his bed. Who the fuck could that be at this time of night? Glancing down, Katsuki realised that his still hard dick was entirely too obvious, but hey, was that his fault?
Glancing throw the peep hole, all that Katsuki could see was a shock of fading green hair, and an all too smiley freckled face. Throwing open the door, he glared at Izuku, dragging him in and locking it again.
"The fuck you want?" Katsuki asked, backing him into a wall, already working at his belt. "It's the middle of the fucking night."
"Slow down, Kacchan," Izuku gently guided Katsuki's hands from his belt, shaking a bag. "I've got your replacement handcuffs. Is your roommate home?"
"Obviously fucking not," heat swept through him at the implication, cock pulsing with want. He wrenched his hands free, nimble fingers back on the leather, frantically working it undone. Next went Izuku's trousers, seconds before Katsuki thunked to the floor, running his hands up thick, corded thighs. Under his touch, goosebumps raised on the flesh, the powerful muscle underneath flexing ever so slightly. Right in front of his lips stood Izuku's impressive girth, already hard, ready for the taking.
Izuku let him, as he swallowed down the length as best he could, licking up the underside tightly, bobbing his head to a silent rhythm. A large hand wound its way into his blonde spikes, using it has an anchor to thrust into Katsuki's mouth easier. And oh fuck, the harsh tension on his roots, being unable to breathe around Izuku's impressive cock… the ruined orgasm from earlier came back in full force, dick hard and leaking under his towel. It would be so easy to just slip his hand underneath..
Almost as if he were a mind reader, Izuku kicked his traitorous hand away, stepping down on his lap with his shoe still on. Katsuki's eyes rolled all the way back, so desperate to come but unable to finish; heavenly was the moan that was ripped from him, Izuku's cock falling from his mouth.
"Very good, Kacchan," Izuku traced Katsuki's jaw, grinding down with his boot lightly. It didn't really matter, as Katsuki's mouth slacked, back arching as he tried to rut into the hard boot. "But I've got something better for you."
Looking up, Katsuki saw Izuku pull out the fresh set of handcuffs from the bag, dangling them off one finger. "Why don't we give these a little test drive?" Katsuki nodded quickly, pushing off the boot and dragging Izuku into his room by the t-shirt. He was so turned on it was insane; if Izuku had ever had bottomed before, you'd best believe Katsuki would have pushed him against the door, spreading those thick thighs and taking everything he could get.
He felt a large hand grip the back of his neck, turning him to face Izuku. Izuku got so close to his face that Katsuki could feel the heat radiating off of his cheeks, plump lips ready for the taking.
"You're awfully quiet tonight. And desperate," Izuku whispered, backing Katsuki onto the bed. He swallowed and looked up at him, already trying to hook a leg around his waist.
"I was jerking off when you got here, and then you enter looking like that…" Izuku was literally only wearing a t-shirt and shorts, but for some reason, it was the hottest shit alive. Fuck, where was his usual snark? He knew he should be tearing that outfit to shreds with a few choice words, but right now, all he wanted was all of that clothing off and all of him inside. "God, fuck me."
"Planning on it." Izuku groaned, kneeling straight to strip off all remaining clothing. He ripped Katsuki's towel off too, before harshly flipping him over and cuffing his wrists behind his back. Leaning down to his ear, Izuku muttered, "traffic light system again?" He waited for the nod, before giving the chain a good tug.
"Tied up like a little slut," Izuku groaned, running his still hard cock through the rough clefts of Katsuki's ass. Shuddering, he moaned as it dragged along his asshole, catching slightly in a way that had him face down on his knees, grinding into Izuku's cock. His useless hands grasped at nothing, nails biting into his palms, whimpering all too loudly when the head of Izuku's cock caught on his rim. "Where's your lube?"
"Left table, top drawer."
In order to get it, Izuku draped himself over Katsuki, pressing him further into the mattress. That, oh that right there, was definitely a new kink, Katsuki thought, grinding his hips into the duvet. Izuku sat back up, dragging Katsuki's hips back into the air. Uncapping the lube, he poured a bit into his hands, warming it up before tracing Katsuki's rim, prodding gently inside.
"Fucking get on with it," Katsuki groaned, shifting his hips. His knees fell wider, spreading himself open like a delicious home cooked meal. Izuku's finger worked its way inside, slow and scraping along his walls. Keening, his cock twitched, a heavy pulse of precum dripping from the tip. Fuck, already?
Groaning as he grabbed his own dick, Izuku bent his finger further inside, curling and massaging velvety walls. Slipping another finger in, it didn't take long for him to prod at Katsuki's prostate, a guttural moan echoing around the room. He kept bucking back on the thick, scarred fingers, shoulders shuffling and handcuffs clinking lewdly. Oh fuck, oh fuck, he really was going to cum like this, wasn't he? Tied up like a common whore, untouched.
Barely gasping a warning to Izuku, Katsuki spilt over his bedding, rocking back and forwards to the pulse of his cock, groaning into the sheets.
"Fuck, Kacchan…" Izuku sighed, giving his cock another languid stroke. "I hope you still have it in you for another go."
"Mhmm," Katsuki breathed, already shoving his ass back to grind on Izuku's cock. "Fuck me already, or did you come here just to watch?"
Izuku pried his ass apart. "Both, for next time." He lined his cock up, throbbing with need, before slowly pushing in, one hand gripping Katsuki's hip, the other firmly pressing down Katsuki's neck into the bedding. Shit, was he in heaven? The burning, overstimulating stretch of Izuku's cock was divine, a treat after a long week. Izuku bottomed out, stilling to give Katsuki a breather; but he was having none of it.
"Come on, you can do better than that," he taunted, clenching down hard. The loud moan of surprise was worth the sting of the slap that went to his ass.
"Don't fucking tempt me," he slapped it again, turning the area bright red. Izuku massaged it, gentle, before slapping the other side too. And wow, the sounds Katsuki was making; whimpering, voice thick in his throat as he held back tears already, bucking backwards into his cock. Pinch him, he must be dreaming. "Crying already?"
A small nod was all he got in response, but Izuku knew from the way Katsuki clenched down on him, the way he rocked onto him, that he was enjoying this far more than he would let on. Izuku fixed him by the hips, slowly building up a punishing rhythm, the slick slide almost too much to bear.
"Fuck, so tight-" Izuku choked out, hips stuttering and Katsuki clenched again. "You going to come again so soon?"
Katsuki shook his head, but the way that a constant tremor lit his spine, the way his head fell to the slide letting out unfiltered moans, told a different story. He was close too - embarrassingly so considering it had only been five minutes. Grabbing the handcuff chain, Izuku dragged Katsuki into kneeling, using the metal as extra leverage. Katsuki just let out entrancing strings of noises, unabashed, head falling back into Izuku's shoulder. He was gone, throat red, cheeks stained with salty tears, mouth open and leaking a fine line of saliva. Izuku was pretty sure his eyes had rolled all the way back too, and his cock, so pretty and flushed, was bobbing with every thrust. Whispering directly into his ear, Izuku asked him a question, but Katsuki didn't even register it.
"I said," Izuku pinched a nipple, before reaching down to stroke his cock to his thrusts, "are you going to come for me, slut?"
Katsuki rapidly nodded, little whimpers and noises escaping his throat, shaking as his cock pulsed thick strings of cum. Izuku's hips stuttered, his own orgasm slamming over him like a tsunami. Curling up, he bit Katsuki's shoulder as he rode it out, thrusting shallowly until he was able to come down.
"You good?" He croaked, massaging Katsuki's wrists as he undid the cuffs, bringing him back for a hug. Slipping out, he turned Katsuki around, kissing his wrists to ease any pain. From the corner of his eye, he noticed Katsuki flush slightly darker, but paid it no mind.
"Yeah," his voice was hoarse as fuck, in desperate need of some water. Just letting Izuku do his thing, he hummed, aftershocks still thrumming through him. "Water would be nice."
"On it."
While he was gone, Katsuki admired the new handcuffs. Quite durable, it seemed, made from something good like titanium. The chain was double linked too: resistant to snapping if it was pulled. He smiled to himself, dropping the expression as Izuku re-entered.