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It’s not like the thought has never crossed his mind before, it’s just that the idea really comes front and center when he’s looking from this angle. And it’s even better when those narrowed red eyes look up to lock with Denki’s gold ones. Like, shit, Katsuki has really big tits. “Oh, fuck–”
Katsuki’s face twists and that teardrop that was building up in his right eye finally slides down his cheek. He pulls off after a second, coughs, swallows, and then coughs again. He scowls. “Fucking shit, sparky, you tryna kill me??” He wipes his mouth, catching his breath.
Denki glances past his face, to his pecs that he can't for the life of him understand why Katsuki works out so much. “Sorry, I couldn’t help myself,” he mutters sheepishly, grinning as his eyes flick back to Katsuki’s face.
“You’re still hard, you whore,” Katsuki says, totally scandalized. He wraps his hand around Denki’s dick and leans in again.
Denki groans. “Ugh, cmon, can’t I fuck you? I’m starved, Kats.” It hasn’t even been that long, really, he’s just an insatiable jackass.
Katsuki smirks, licking over Denki’s slit like the dirty tease that he is. He slides his tongue down his length, plants a soft kiss on the underside, and then pulls back again. All just to watch Denki suck in a breath and fail to hide a shiver. “You’re that desperate?” Katsuki teases, pushing himself off the ground and towering over Denki.
“Yeah, I freakin’ am,” he huffs, hooking his fingers in Katsuki’s sweats and shoving them down with no hesitation. Not like hesitation is needed here, anyways. Katsuki snickers, stepping out of the pants and slipping his boxers off himself. He shoves a hand in Denki’s hair and pushes his head back.
“Freakin’?” He grins, an eyebrow raised.
“Yeah, no vulgarity in my room, bud,” Denki says, grabbing hold of Katsuki’s hips and appreciating the view.
“Pfft, dumbass.” Katsuki leans in for a kiss, short and sweet. He presses his knees onto the bed on either side of Denki's hips one at a time, and Denki grins wide, ogling his boyfriend unabashedly.
Katsuki's quick to yank open the bedside table, pulling out a half-empty bottle of lube without needing to look, all too familiar with Denki’s space. He pops open the cap and drizzles the cool liquid over Denki’s dick with no warning, a mischievous little smirk on his lips that drives Denki absolutely crazy. He shudders, dropping back on the bed and willing himself not to make any weird noises (it’s happened far too many times already).
Katsuki spreads the lube with a good few strokes and then lines himself up eagerly. “Shit, no prep?” Denki mumbles, though he’s definitely not complaining when Katsuki starts to move downwards.
“I prepped before I came,” he grumbles under his breath, just loud enough to be heard. His light scowl falls as he sinks further down—his mouth slightly agape and his brows furrowed with pleasure. Shit, he’s pretty.
Denki slides a hand up his side. “You’re still fucking tight,” he breathes out, eyeing Katsuki’s chest and considering his options.
“Haah.. shut up.” He shudders, one hand falling onto Denki's thigh behind him and the other loosely wrapping around Denki’s wrist.
Denki bites his lip and decides to be the pervert that he is, sliding a hand up to squeeze one of Katsuki’s pecs, palming over his nipple. Katsuki gasps, losing his strength for a split second and falling the rest of the way down on Denki’s cock. He lets out a pathetic little moan, face flushing bright red and looking down at Denki with wide, surprised eyes. “Fuck–” he murmurs, adjusting to the added length inside of him.
“Didn’t think you’d be so sensitive,” Denki whispers, more to himself than anything. Katsuki scowls.
“Could’ve warned me first,” he grits, sitting up slowly and letting out a shaky exhale.
Denki hums, totally amused. “Looks like you liked it though,” he teases, flicking the pad of his thumb over the sensitive bud to prove his point.
Katsuki’s eyes go wide again, and his head falls forward with a high-pitched whimper. “F-fuck, Denki—” He’s cut off by his own moan when Denki pinches. Not too hard, but enough to hurt at least a little. Katsuki leans forward, hands grasping at Denki’s torso.
“Don’t slack off on me, Kats.” He bucks his hips up, making him jolt with a gasp. He loves to tease Katsuki, and Katsuki loves it too, even if he’ll never admit to it.
“Fuckin’ asshole..” Katsuki glares, putting his closed hands on Denki’s chest and lifting his hips shakily. He shuts his eyes as he drops himself right back down, letting out small little gasps each time he repeats the motion.
Denki groans, meeting him halfway to make it a little easier on him. He brings both hands up to his chest this time, fondling Katsuki’s pecs and absolutely relishing in the sweet noises it gets him. “God, you’re fucking pretty,” Denki breathes out, tweaking one of Katsuki’s nipples in between his thumb and index finger.
Katsuki keens, back arching and body stuttering with the sudden pain and pleasure mixing together. His breath is quick and heavy, coming out in soft gasps and moans. It’s unbelievably cute.
“Fuck, fuck, Denki–” Katsuki whines, practically drooling over him.
Denki gazes up at him, then decides that he’d much rather be on top, and promptly flips their position. Katsuki squirms on the bed, whining at the very brief loss of Denki’s dick inside of him. “Freakin’ slut,” he snickers, ramming right back in, all the way to the hilt.
Katsuki’s back arches off the bed, his eyes welling up with tears and his hands grasping at the sheets like it might save him. Well, it definitely doesn’t. Denki grasps his hips, fucking into him like the world might end if he doesn’t (it really might).
Katsuki wriggles under him, totally losing it. He lifts a hand up to Denki, and he takes it without question, interlocking their fingers and then dropping them back onto the mattress.
He leans down, just inches away from Katsuki’s crying face. “Have I ever told you that you have huge fuckin tits?” he murmurs.
Katsuki gasps, his face twisting into one with a whole barrage of different emotions flashing all at once, and then his eyes screw shut and he wails as he comes all over his stomach. Denki laughs, thrusting a few more times before following suit inside of him. He groans, dropping his head on Katsuki’s shoulder.
“Shit, ah..” He struggles to catch his breath again.
It takes a hot minute, but eventually Katsuki speaks again, “Fuckin’ pervert… what the hell…”
Denki just giggles, knowing better than to deny it. He most definitely is a pervert, anyways.