Chapter Text
Bakugo was an endless surprise.
Kirishima pushed into him slowly, like he always did, despite his boyfriend’s impatience. The last thing Kirishima wanted to do was hurt him in that way, and he would always revel in the feeling of it anyways. Would always lose his breath at the feeling of burning, tight heat engulfing his cock. Watching Bakugo’s red, flushed face pinch in pleasure and concentration.
“Fucking move,” a familiar grumble came from the man below him. Kirishima just chuckled, leaned down to brush his lips against the shell of Bakugo’s ear.
“Patience baby,” he whispered and Bakugo whined, hips squirming once Kirishima was fully seated inside of him.
In the year that they’d been dating, Kirishima found that Bakugo liked a lot of things he never would have guessed he would have. The first time they had sex he’d asked Kirishima to, quote, “ fuck him into a goddamn grave. ” Kirishima had basically choked on his own tongue and spent the next 20 minutes rolling around on the floor of his dorm room. But now, after graduating and spending a year in the field , things were a bit different. He got a lot less flustered now, thankfully, but sometimes he was still shocked at the fact that his fiery boyfriend liked stuff like this.
Kirishima drew his hips back so just the tip was left, and then drove back in in one fluid motion. He groaned at the friction, and then smirked against the skin of Bakugo’s neck as he felt the blond’s back bend into him, his hands popping against the hardened skin of his back as a loud, unrepentant moan was drawn from his chest.
Bakugo liked this. Liked the air being punched out of him with Kirishima’s hips, liked the noise of sweet praise and dirty insults being whispered into his ear. He always pretended like he didn’t, but Kirishima knew. The journey of tearing down Bakugo’s ego was one he’d never get tired of.
“ God,” Bakugo all but wheezed. One hand tangled in the back of Kirishima’s hair when Kirishima started thrusting, the other scraping delicious red lines across his shoulder.
Kirishima kissed lightly up and down Bakugo’s neck, already bruised and bitten and abused from teasing him earlier. Bakugo whined against the sensation, tilting his head to the side in a silent plea and Kirishima couldn’t help but chuckle.
“You’re doing so good baby,” Kirishima groaned into the skin before nipping lightly and Bakugo’s body tensed before it wracked in a violent shiver. “Taking my cock so well”
“Fuck, fuck Ei I- AH-“
Kirishima’s movements picked up, roughly slamming into Bakugo in that way he knew drove him up a wall. He chuckled at the whine in Bakugo’s voice, the desperation and trembling of his body.
“Damn Kat,” he purred, pulling back. “I only just started fucking you and you’re already whining like a bitch.”
He got a purposeful blast to the cheek for that, and he laughed as Bakugo’s pissed off but flushed face glared up at him. He slowed his pace slightly, smiling down. “Oh come on. It’s hot.”
“Fuck you,” Bakugo spat. Kirishima felt his face darken, heart quicken in his chest.
He quirked a brow, eyes scanning Bakugo’s before he pulled out of him.
“NO! No, fuck, Kirishima,” red eyes squeezed shut and Bakugo’s body thrashed on the sheets below them. Kirishima smirked, ignoring the fact that he was so hard it was kinda getting painful. This was too fun.
“What’s wrong?”
“....you’re a dick,” Bakugo opened one eye to scowl at him, brows furrowed and lips curled in a frown.
Kirishima gave his most patronizing smile. “And you’re a brat. Tell me what you want, nicely .”
Bakugo glared so hard Kirishima would have thought he was genuinely angry if he couldn’t see his dick twitch on his abdomen.
After a moment of silence, Bakugo rolled his eyes, sighing into an annoyed groan that made Kirishima want to slap him across the face.
“I’m sorry, okay? Will you just...fuck me already,” Bakugo growled, turning his gaze to the side as his cheeks bloomed almost as red as Kirishima’s hair.
Kirishima wasn’t sure when he got so comfortable in this role, but he loved it. He settled into this sadistic.. dominant asshole persona so easily, it might have scared him, if it didn’t turn him on so much. And the reaction that Bakugo had to it was even better. The rush he got from acting like this was only topped by kicking ass on the battlefield.
Kirishima moved one hand to wrap an iron grip around Bakugo’s jaw and snap his face back up to look at him again. “That didn’t sound very nice, Katsuki.”
Suddenly Bakugo’s hand grabbed his wrist and guided it lower, so Kirishima’s fingers were wrapped around Bakugo’s neck. Kirishima paused, eyes scanning a face that was still turned away in a defensive signature pout.
His blood jumped, a smirk climbing onto his face at the sudden realization. He tightened his fingers just slightly to feel Bakugo gasp and hold him tighter, pressing his hand against his throat.
“Really? Who would’ve thought-“
“Shut the fuck up and agh -“ Kirishima’s hand tightened immediately, cutting off Bakugo’s words as he dropped his hips, grinding against his ass but not entering.
Then he pulled his hand away and sat back on his knees, hands on his thighs as he watched Bakugo’s eyes snap open and a loud, frustrated groan rumble from his chest. Kirishima smirked. Bakugo’s cock was bright red against his abs, precum making the area around it glisten in the dim light of the room. That looked like it sucked.
“ Why,” his boyfriend growled, voice gravely and dark.
“Rude little pricks like you don’t get to be fucked how they want,” Kirishima said, eyes scanning over the pale expanse of Bakugo’s torso.
His boyfriend made a frustrated noise that sounded a bit as if he was hiding a moan, and Kirishima fought a smirk as he watched a bit of precum leak onto white skin. “You know what to say,” he prompted.
Bakugo let out a tired sigh, red eyes fleeting to his for just a second before turning to the side again. He pinched his lips, hands twisting in the sheets at his side. Kirishima could hear his inner struggle from here, knew each second without touch was driving him up a wall. He’d break soon enough. He always did.
“You know I hate saying that.”
Kirishima chuckled lightly, softly, before running a hand on Bakugo’s thigh. The muscle twitched under his hand at the contact. “And you know I hate when you’re disobedient.”
Bakugo shot a half-hearted glare up at him, his piercing red eyes just slightly less intimidating than usual, clouded with arousal.
“You like when I fight back,” Bakugo retorted. Kirishima smirked, one eyebrow climbing as they searched each other’s faces.
“And you like when I force you to submit,” he countered. He kept eye contact as he leaned forwards again, moving to hover over the blond and lower himself so he was just barely within centimeters of his lips. Bakugo looked like he was trying desperately to keep still, keep his mouth shut, prevent himself from acting out again.
“One word baby. You beg, and I’ll give you just,” his closed knuckles brushed the length of Bakugo’s cock, and the blond hissed through his teeth, hips tilting into the sensation before dropping again when Kirishima pulled away. “what you want,” he finished, breathing a hot puff of air onto Bakugo’s parted lips.
Bakugo started to tilt his head up, trying to press their lips together, but Kirishima was faster. He leaned away just before they made contact, and to his delight Bakugo whimpered , eyes squeezed together in frustration.
“ Please.”
It was soft. It didn’t sound like his notoriously crass and angry boyfriend. It was laced with need, and desperation, and frustration. Kirishima’s skin lit on fire, sparks of pleasure and pride flooding through his body.
“Please, Ei I need-“ Kirishima cut him off, pressing their lips together finally , and Bakugo immediately moaned into his mouth, parting his lips so Kirishima could lick into it. Arms wrapped around the back of his neck and Bakugo lifted his body to press his chest into his and grind their dicks together. Kirishima moaned at the much needed contact, furrowing his brow in frustration as he pulled away again. He needed-
His thoughts were interrupted by a high pitched whine from below him, and Kirishima’s hand moved quickly, almost as if on autopilot, to wrap around Bakugo’s throat again and squeeze, cutting off the sound at the source.
The blond’s hips jumped, his eyes rolling back in his head as his mouth opened around a noise he couldn’t get out. Hands tugged at Kirishima’s hair, and he let up the pressure just enough to feel and hear a ragged gasp pass through Bakugo’s lips.
“Good boy,” Kirishima purred, breathless. He lined himself up and pushed in again, moaning at the tightness that swallowed him.
He felt a moan ripple against the palm of his hand and holy shit, Bakugo’s face was red, a small vein straining on his temple and he had such a fucked out look on his face Kirishima almost came just from looking at him. Eyebrows furrowed but drawn slightly up, eyes squeezed shut, mouth hanging open on gasps and small moans. His hand faltered, just for a second, and Bakugo’s lidded eyes snapped to his and Kirishima couldn’t help but moan at how blown his pupils were.
He snapped his hips and Bakugo moaned again, eyes twitching like they wanted to close but he held Kirishima’s gaze like it was a challenge. His lips curled in that confident smirk that always made Kirishima’s knees weak, and he felt that small string connecting his resolve snap. He started moving, fast, hard thrusts that made Bakugo’s body jolt towards their headboard, pleasure shooting through his body at each drag of friction.
Bakugo was gasping each time Kirishima bottomed out, voice strained against Kirishima’s hand as if the air was being physically pushed from his lungs with Kirishima’s cock. Kirishima’s head dropped to Bakugo’s collarbone, his hand basically just resting against the blond’s throat as he lost himself in the feeling of tight heat clenching around him.
“Kiri-shi-ma-“ Bakugo gasped between thrusts. He sounded so wrecked, Kirishima felt that familiar tingle in lower stomach just from his voice.
He looked up only to find Bakugo’s eyes closed, mouth hanging open and a line of drool running from the corner of his mouth. Kirishima groaned at the sight, lifted himself up just a little to look down at Bakugo’s hands, dead weight and relaxed at his sides. He pressed a light kiss to Bakugo’s cheek, and the blond tilted his head slowly to press his lips to Kirishima’s but it was just that, a press. He was too deep in subspace to do more than that, but Kirishima knew just the warm contact that came with a kiss could ground him like nothing else. He loved Bakugo like this, pliant and relaxed and fucked out.
“You’re so pretty Katsuki,” he panted against his lips. He moved to kissed over his cheeks again, his nose, and Bakugo whined at the praise. “You’re doing so well for me, so good.”
“Ei.. Ei.. harder, come- ah- come on-“ Bakugo whispered, hips lifting just slightly to change the angle. Kirishima kissed him again before lifting himself up slightly.
Then he drew his hips back, paused, readjusted the grip on Bakugo’s throat and then slammed in hard at the same moment he tightened his hold and cut off Bakugo’s oxygen.
Bakugo jolted, eyes snapping open and body lifting off of the bed, mouth open on a scream that couldn’t leave his throat. On the next thrust, Kirishima rammed into his prostate and Bakugo spasmed , quaking and shivering and twitching as he came hard, untouched onto his own chest and Kirishima’s stomach.
He clenched so hard Kirishima couldn’t hold back a moan of his own, burying his face in Bakugo’s neck as he took his hand away. The blond took a gasping, desperate breath before coughing and trembling under him. He was still unconsciously clenching around Kirishima, the pressure driving him nearer and nearer to the edge with each second.
“Ei,” Bakugo wheezed, and that was it, Kirishima’s hips stuttered and buried deep into Bakugo and he came, biting hard into the skin Bakugo’s neck. He let out a long, muffled moan as waves and waves of pleasure washed over him, felt Bakugo whine and squirm at the bite and oversensitivity.
He came down from it slowly, ears ringing and he pulled off Bakugo’s neck, cringed as he saw blood drip from the bite. He pulled out, wincing as Bakugo made a pained sound.
“Shit, sorry,” he whispered, placing a soft kiss on the mark and then thumbing over it gently. He pulled back only to see his boyfriends flushed face, completely relaxed and exhausted and covered in bliss.
His eyes were closed, and he was panting, body trembling just slightly. Kirishima knew he needed to get up so he could clean, but he didn’t want to leave his boyfriend alone so out of it. He leaned down to kiss him, gently, and thankfully Bakugo responded, chin tilting up into it as a low, rough sounding hum vibrated across Kirishima’s lips.
“I love you,” he whispered. Bakugo hummed again. “Are you okay?”
Bakugo opened one eye, blinking at him before a soft smile pulled at his tired lips. Relief flooded Kirishima’s body. A smile was good. He could work with that.
“I know you don’t want me to leave but I need to clean you up,” he said gently, hand cupping Bakugo’s cheek. The one open red eye fluttered shut again and he nodded into Kirishima’s hand. Kirishima smiled, warmth blooming in his chest. God he loved this man.
Kirishima pressed one last kiss to Bakugo’s cheek before sitting up, taking off the condom and tying it before tossing it in the trash. He stood up, took a moment to steady himself. His legs still felt like jelly.
He grabbed a towel from their bathroom, ran it under warm water. He was about to turn around and walk back into the bedroom but he paused, eyes flitting over to the rinsing cup next to the sink. Bakugo… could use something to drink right? To help his throat?
Yeah. That was good. He filled the cup with cold water, and then had to re-warm the towel because it had cooled down too much.
He came back to.. more or less the same picture he had left. Bakugo’s face was turned away from him, eyes closed and body lax, but he was breathing steadily now, and he had stopped shaking. His hand was resting on his upper stomach, and his legs were stretched out, long and soft and pale, just like the rest of his body. He was so beautiful it caused Kirishima physical pain, and he swallowed the whine that wanted to escape his mouth.
He sat down on the edge of the bed next to Bakugo and the blond turned his head to blink up at him with tired eyes. He looked soft. Always did after sex like that. Kirishima cleaned him up gently, but quickly. He didn’t want to irritate Bakugo’s sensitive skin any more than he had to.
“I brought you water,” he said, throwing the used towel to the floor. “You need to drink it.”
Bakugo looked down at the glass in Kirishima’s hands before he lifted himself up on his elbows and reached for it. Kirishima held onto it, smiling down cautiously. “I can do it-“
“I can at least drink fucking water by myself shitty-hair,” Bakugo snarled. Kirishima could tell he was slowly stepping back into his personality but the painful scratch of the words and dreary look on his face emptied the threat.
“Does your throat hurt,” he asked as Bakugo lifted to cup to his lips.
“Like a bitch,” Bakugo breathed between gulps, eyes flitting to Kirishima’s before going back to his water. He downed the rest of it in seconds, slamming it onto the nightstand and plopping onto his back heavily.
Kirishima smiled, lifting his legs onto the bed before laying down next to his boyfriend with his hands behind his head. “I’m sorry. Next time I wont-“
“Stop talking,” Bakugo interrupted, moving to curl into Kirishima, one hand on his upper stomach and head on his pec. “It was exactly what I wanted. As fucking always,” he admitted quietly.
Kirishima felt that bloom of pride and adoration for Bakugo bloom in his heart again, and he dropped an arm to curl around broad shoulders. Bakugo sat up, hissed through his teeth from the soreness and quickly pulled the duvet up and over their bodies before returning to his position on the redhead’s chest.
They laid there silently, syncing their breathing and reveling in each other’s warmth for a while. Kirishima couldn’t believe how lucky he was to be holding such a cool and manly and sweet guy in his arms. Bakugo was so cool, endlessly surprising and sexy and..
“You aren’t worrying are you,” Bakugo muttered against his skin. Kirishima looked down at the top of blond hair.
“Mmmm no. Just surprised. Never thought you’d be into that-“
“And I never thought you’d be a sadistic piece of shit in bed,” Bakugo snapped, head lifting up so he could glare down at Kirishima.
He just smirked, shrugged his shoulders. Bakugo was back to normal apparently. “I didn’t either. Guess you bring it out in me,” he purred.
Bakugo scoffed, rolling his eyes as Kirishima pressed a kiss to the top of his head and they both relaxed into the pillows again. A few more beats of silence passed. Kirishima was getting drowsy.
“That was hot as fuck. We should do that again,” he half-slurred. Bakugo hummed in agreement. “We should do that all the time.”
Bakugo snorted, but did nothing else but drape an arm across Kirishima’s waist.
“Love you,” Kirishima whispered as his eyes closed. Bakugo didn’t say anything. “Hey,”
Bakugo took a sharp breath, as if he had just woken up and Kirishima smiled through his sleepy haze. “What,” Bakugo whispered.
“You fall asleep too quickly. I was talking to you.”
“Your voice is so boring I fall right to sleep,” Bakugo whispered, and Kirishima laughed softly.
“You love me?” He muttered, sleep taking over his vision.
“Always,” Bakugo said into his chest.