[NSFW!!!] 8 Simple Rules (for screwing my Childhood Friend) - Chapter 2

Chapter 2: "No questions asked."

It took almost a week for Izuku to get the text. He'd just finished eating and showering, and as he set his phone down on the bathroom counter, it buzzed at him angrily.

> My room in 5?

He smirked, contemplating his words as he tapped the reply button, using his free hand to rub at his hair with a towel.

> I just showered 

He set it down again and returned to drying off and getting dressed in his pyjamas, packing his things away into his little basket of toiletries to head up to his room.

> Good, you won't stink.

Izuku laughed, but didn't bother to reply, just tucked his phone into his pocket and headed for the elevator. The floors were near empty at this time of night, everyone getting themselves ready for bed and relaxing for the night, so he reached his dorm room without interruptions. 

His hair was a frizzy mess, he knew, and his baggy All Might pyjamas were probably designed for someone half his age. Katsuki would deem both those things unacceptable, he was sure of it. With a sigh he stripped them back off, digging in his drawers for a decent pair of jeans and a hoodie, then made a fruitless attempt at taming his hair a little before he reached for his phone.

> Yeah, I'm coming

With a little sigh and a concession that it wasn't gonna get any better, he shuffled his way down the hall to the elevator. He could hear voices in the stairwell, but the doors slid closed before they reached the landing, and he breathed a sigh of relief.

Katsuki opened the door as Izuku raised his hand to knock, waving him inside with a little scowl that Izuku countered with a bright smile. The lock clicked behind them, but the scowl remained. Izuku cocked his head to the side, thinking back over their afternoon and trying to decipher what might be bothering his friend.

"Rule two," Katsuki said flatly, as he shoved Izuku toward the bed lightly. "No questions asked."

Izuku giggled, but nodded, reaching for Katsuki to drag him to the mattress. Katsuki let himself be pulled, falling onto the blankets, and Izuku sighed fondly when Katsuki reached for his fly.

"What, nerd?"

"What do you want me to do, Kacchan?" Izuku grinned, winding an arm around his friend's neck. "What are you so worried I'll ask questions about?"

"It's fine, shitnerd. Leave it alone."

"Tell me what you want, Kacchan."

"Fuck off."

Izuku grabbed a handful of dark singlet, flipping him onto the mattress and pinning him down, crotches barely an inch apart. His breath fell hot against Katsuki's neck, teeth grazing light as a feather against the flushed skin, and he shifted his hands to Katsuki's elbows, rendering him helpless.

"Tell me what you want, Kacchan," he said again, his voice a lot lower. "Tell me in all the hot, graphic detail you've got."

"D-Deku," he breathed, heart beating rapidly under Izuku's chest. "I- I don't-"

"Describe it for me," he ground his crotch down, rubbing his shaft against Katsuki's, and felt the erection waiting beneath forgiving sweatpants. "Tell me exactly what you want me to do."

He bit down on the side of Katsuki's neck, feeling him shudder, and Katsuki sucked in a long breath. 

"I... I want..."

"Hmm?"

"Fingers," he blushed, turning his head away stubbornly.

"What do you want me to do with them, Kacchan?" Izuku teased, holding his hand up above Katsuki's face and curling the first two pointedly. "What would you like me to do to you?"

"I bought lube."

"What a good boy, but that still doesn't answer my question."

"Put them in me," Katsuki mumbled, the crimson flush spreading down his chest. "F-finger me."

"Yeah? Little Kacchan wants to be finger-fucked?"

Katsuki nodded, and Izuku felt another smirk curl across his lips. He ran the two fingers down Katsuki's cheek, down to hard nipples, and hummed in contemplation.

"You're gonna be a good boy for me?"

"Yeah."

"Do anything I say?"

"Y-Yeah."

"Hmm, good. I'm gonna hold you to your word, Kacchan."

"Okay."

He slipped Katsuki's singlet over his head, casting it aside to better pinch at the nipples, feeling Katsuki squirm beneath him. He breathed hard but didn't protest, and Izuku struggled to hold back a giggle. The pants came next, Izuku's grip slowly slipping them down Katsuki's legs, waiting for Katsuki to complain or swear or hurry him, but still he waited patiently.

"So good," Izuku teased. "You want this bad, don't you?"

Katsuki nodded.

"Say it. Tell me how much you want it."

"I want it so bad."

"With a little enthusiasm, Kacchan. Tell me what you want. Properly."

"I... I want you to... To stuff my hole full with your hand," he mumbled, still refusing to make eye contact. "I want it to burn, I want to be sore in the morning from your hands tearing me apart."

Izuku hummed softly, running the same two fingers down the crease of Katsuki's crotch toward his ass. 

"And you're gonna let me do it however I want?"

Katsuki nodded once more.

"Alright. Roll over then, you needy little slut."

Katsuki's dick twitched, and he turned onto his stomach in a hurry, burying his nervous face in a pillow. Izuku shoved his legs aside, bending them up out of his way so the tight little ass pointed up at him, as if it were waiting for his touch. Katsuki arched his back a little, presenting to him, and Izuku couldn't quite hold back a moan.

"Just like that, Kacchan. That's perfect. You look perfect like that."

He nodded into the pillow, and Izuku reached for the dark bottle on the nightstand, brand new and untouched. He made a point of opening it loudly, letting Katsuki hear every little click and snap of the lid, then slowly, with the thinnest stream possible, began to trail cold liquid down Katsuki's crack.

Katsuki whined, and Izuku spared a finger to smear it toward the little hole, rubbing at the tight muscles firmly. Katsuki's body tensed up, and Izuku sighed as he set the bottle aside for later, gripping the firm asscheeks in each hand. He squeezed hard, feeling the muscles fight back, listening to Katsuki whimper into the pillow as he spread them wide to see what he was working with. 

Truth be told, Izuku had never done this either. He knew the basics from curious internet searches, but he'd never really gotten off on the idea of sticking something in his ass, so he'd never bothered to try it out. He took his smallest finger, pressing at Katsuki's entrance, and smiled when the tip slipped inside.

"You're gonna have to relax for me, Kacchan," he directed. "It's gonna be tough if you don't."

Katsuki nodded, turning his head to peer back at Izuku and doing his best to let his muscles go soft. Izuku pressed a little deeper. 

"That's better, what a good boy."

When his finger disappeared into the warmth, he began to move it a little, pumping it in and out slowly, then round and round in little circles. Katsuki pushed back into him, searching for more, and Izuku smiled as he pulled it out completely. 

Katsuki whined, but then a thicker finger was circling at his hole, slowly sliding inside and stretching him a little wider. He hummed faintly, nodding the moment Izuku opened his mouth to check in, getting a little chuckle instead of the question.

As Katsuki began to relax into the touch, red eyes staring back at him with a strange softness to them, Izuku reached for the bottle again and slicked up his second finger. When it pushed at the opening, Katsuki moaned, and Izuku couldn't help but laugh despite the glare it earned him in return. 

"You like that, huh?" he teased, poking at him lightly as he waited for the muscles to relax again. "You want my fingers in your little asshole?"

Katsuki nodded, and Izuku tilted his head to the side, meeting his eyes.

"Say it, Kacchan."

"I want your fingers in my ass," he whispered, squeezing his eyes shut to break the eye contact. "Please."

"There's my good boy. I'm proud of you, you're getting so good at asking nicely for me."

"More. Please."

"I will as soon as you relax, Kacchan. You gotta give me some room to work with, okay?"

He nodded again, turning his face away to hide it, and his limbs sagged a little as he unclenched. Izuku got the tip of his middle finger into the hole, toying with it a little to make room, and soon he was sliding it all the way in at an agonising pace, Katsuki moaning into his pillow the whole way.

"Okay?"

"Yeah."

"I'm gonna move them, then."

"Yeah."

He circled again, watching the little ass and dripping cock move with his touch, and smiled to himself faintly. Katsuki really was a slutty little bottom, he'd never expected that from the ball of angst and rage he'd grown up with. 

He curled his fingers experimentally, grinning at the whimper it elicited, then stretched them apart a little, widening the chamber. Stretch, curl. Stretch, curl. He found a steady rhythm, listening to Katsuki pant and moan and whine as he pushed backward, searching for more, for deeper. 

"Roll over, Kacchan."

"H-Haah?"

"On your back."

Izuku kept his fingers in deep as Katsuki adjusted himself, spotting a little damp patch on the pillowcase where Katsuki had either drooled or teared up. Either one was okay with him. 

"How do you feel, Kacchan? Does it hurt?"

"A little," he admitted. "But it's good too."

"We'll just stick with two, then," Izuku decided, readjusting his own position. "I'm gonna try something. Relax for me."

He sank his fingers in deep, making only little curls and twitches as he leaned in, and smirking when he figured it out. He stuck his tongue out and licked at Katsuki's leaking member, taking the head between his lips to suck a little harder, and when Katsuki drew a shuddering breath, he curled his fingers. 

Katsuki writhed, searching for more, and Izuku complied. Suck, curl, suck, curl. He sank a little lower, swirling his tongue around the swollen head, and Katsuki whined again desperately. Lick, stretch, lick, stretch. 

Finally he lowered himself again, oddly proud of himself for reaching the base without choking on it, and finally he began his master plan. A bob of the head, a thrust of the hands. He started slowly, making sure to alternate hand and mouth, and once he got comfortable with the rhythm he moved a little faster. Katsuki couldn't decide whether to press his ass down on the hand or buck his hips up into the mouth, his hips twitching awkwardly in a completely dissatsifying compromise, and Izuku hummed around the pulsing shaft as he felt Katsuki get closer. 

He curled his fingers slightly, thrusting in on an angle, and suddenly Katsuki was moaning, his mouth wide open without a care in the world for who might hear him, pressing down demandingly against the hand. Izuku aimed for the same spot again, hitting it mercilessly as he sucked and swallowed, and Katsuki shot his load into Izuku's mouth with no time to warn him. 

It seemed to go on forever, spurting again every time Izuku thrust into that sensitive little spot, and he couldn't help but wonder how much water Katsuki had had to drink that day. Could a man get dehydrated from cumming too much? He'd never looked that one up, maybe he should have, if this was how their nights were going to go from now on.

"Deku," Katsuki croaked, his cock softening in Izuku's mouth. "E-Enough."

"Oh," he mumbled, letting the dick fall from his lips. "Sorry, you just looked so pretty all flushed like that. I got distracted."

"Shut up."

"No," Izuku smirked, licking cum from his lips and making Katsuki moan all over again. "I don't think I will."

He licked a last bead of cum from Katsuki's shaft, a cringe and a pained whine parting the pale pink lips, worn with teeth marks from trying to stifle his noises. Mercifully he backed off, letting Katsuki squeeze his legs together to hide himself, and Izuku didn't comment on the pointlessness of the gesture. 

"Sorry," Katsuki choked out, Izuku's eyes widening in his shock. "I guess I should have done you first."

Izuku laughed, openly and whole-heartedly, and Katsuki cracked a tiny smile of his own as he threw an arm across his tired eyes.

"How about this?" Izuku asked, crawling up the bed to lean over him, nipping at his neck again. "I'll handle it myself, and you can let me finish on your face."

"My face?"

"Uh-huh. Nice and messy."

"Why?"

"What happened to 'no questions asked'?" he teased.

"Right, yeah. Okay, sure."

"Really?"

"Uh-huh. If you want."

"God yeah."

He sat back on his heels, using Katsuki's stomach to help brace himself, and pulled his jeans down just enough to free himself. It came with a long sigh of relief, an ache finally diminished - Izuku hadn't realised just how hard it had made him, tearing Katsuki apart like that. Katsuki might be a little slut, but apparently Izuku was in to that. Who knew.

He drizzled some more lube into his hand, slicking up his shaft, and Katsuki peeked out from under his arm to watch. There was something fascinating about watching the way Izuku toyed with himself, slowly at first to find the right motions, then steadily growing faster, like an art form he'd perfected in his early teenage years that Katsuki had sadly missed out on. He wondered if he could find some fireproof gloves that wouldn't chafe his cock, so he could try it for himself, but maybe it was better to just let Izuku handle it for him. He couldn't imagine jerking it into his hand would feel better than the menagerie of motions Izuku had subjected him to, the endless spiral of pleasure and pain and more pleasure sparked by the pain. 

"I like it when you hurt me," Katsuki mumbled, Izuku's eyelashes fluttering open to look down at the flushed face. "It feels good."

"Next time, then," Izuku smirked, twisting at the head of his cock lightly. "I'll spank your little ass and make you call me master, how does that sound?"

"You trying to get me hard again, fucker?"

Izuku hummed as his dick pulsed at the thought, reaching out his free hand to slap Katsuki's arm away, leaving him exposed. He watched with fiery eyes as Izuku brought himself close, then rose up tall on his knees to aim it down at Katsuki's perfectly flushed face.

"Say 'ahh', Kacchan."

Katsuki opened his mouth obediently, surprising Izuku yet again, and Izuku moaned as he came, shooting his load all over Katsuki's soft cheeks and lips. Katsuki blinked away beads of white that stuck to his eyelashes, and Izuku whined at the sight, grinding down against Katsuki's crotch pointedly.

"You look so hot Kacchan," he explained, when Katsuki's eyes widened. "I never thought you'd look so good covered in my damn cum."

"Rule three, no dirty talk." Katsuki blushed.

"Like hell. Rejected."

He reached for the tissues but Izuku slapped his hand away with a smirk, ignoring the glare it earned him.

"A little longer, Kacchan. I want to see how it looks when it's all dried up and nasty on your skin."

"You're gonna give me my first ever pimple, aren't you?"

"According to the internet, semen is actually good for your skin."

"I've gotten by for this long without relying on it, excuse me if I don't try that one out."

Izuku snickered, getting a little smile from Katsuki too, and finally climbed off him with a fond little pat on the ribs.

"Gimme a sec, I'll get you a damp cloth."

He left Katsuki on the bed to recover, grabbing a facecloth on his way through to wash his hands, making sure the water was warm before he soaked it. Something about Katsuki after sex was too sweet and soft, he couldn't help but feel the need to take care of him.

"You still awake?" he teased, when he found Katsuki breathing softly, his eyes closed. "Don't tell me you fell asleep that fast."

"I'm up," he grumbled. "I feel gross."

"No kidding, can't understand why."

He gently wiped long stripes down Katsuki's face, making sure to find a clean patch on the cloth before he tenderly cleared eyes and lips. Katsuki sighed when Izuku gave him a last once over, eyelids fluttering open again to watch as he cleaned off his dick. He tossed the cloth aside then contemplated Katsuki's tired form, laid out across the bed like a much hotter version of sleeping beauty, and for a moment he had the urge to snuggle up next to him and sleep.

"I should go," he said instead, as he hiked his jeans back up and adjusted his hoodie. He'd never even stripped, what kind of weird relationship was this? "You get some rest, Kacchan."

"Oh. Yeah, okay. Um, thanks?"

"You don't have to thank me," Izuku laughed, ruffling Katsuki's hair and getting a glare in return. "Call me next time you're bored, yeah?"

"Yeah," Katsuki cracked a smile. "You can call me, too, if you want."

"I'll keep it in mind."

A little breathless, and with a last fond smile, Izuku showed himself out into the hall. If anyone saw him he could still plausibly claim he went by for homework help or to make him call his mother, but he knew if anyone saw Katsuki there would be zero excuses. Somehow that thought was exciting to him, in a twisted kind of way.

Well, their relationship had always been a weird one. Maybe it didn't matter that much after all.

───────

Izuku stared at the back of Katsuki's head as they sat in class, the teacher's words going in one ear and out the other with no stops in between. Every time the blond head moved, stretching out the side of his neck, Izuku had the urge to lean forward and bite it. Every time he leaned back and sighed, staring at the ceiling, Izuku remembered the little whines that came from his lips as his back arched delightfully.

He was a mess. 

The moment the bell rang and the class was dismissed, Izuku leaned forward, bringing his lips close to Katsuki's ear.

"My room," he whispered. "Now."

Katsuki smirked, but nodded faintly, grabbing his bag to pack away his books a little more hurriedly than usual. Izuku left him to finish and walked out, not bothering to wait for his friends to say goodbye, moving at a brisk pace as he headed for the dorms.

His room was a little messy, but he didn't feel like Katsuki would really care about that, so he threw some clothes from the bed to the desk and called it a day. He had a half-empty bottle of lube somewhere in his bedside table, but as he dug for it he heard the footsteps stop outside his door.

"It's open," he called, finding the bottle and holding it up triumphantly. "Come in!"

Katsuki kicked it closed and locked it, smirking when Izuku finally turned to look. Neither of them had even changed out of their uniforms yet, and Katsuki reached for Izuku's shoddy tie. 

"Your turn to be desperate, huh?" he teased. "What do you want me to do to you?"

It was a familiar question, Izuku had asked it multiple times before he'd dragged the hot admissions from Katsuki's lips, but he knew how to play this game.

"I want you to get on your knees and suck me so hard I see stars."

"Oh yeah?" Katsuki faltered a little, but kept the smirk on his face all the same. "That's what you want, is it? You gonna ask nicely?"

"No, I'm just gonna shove you down and fuck your mouth if you don't obey."

Katsuki couldn't keep his composure anymore, biting at his lower lip, and Izuku grinned at him.

"Sound good?"

"Yeah," Katsuki conceded. "Okay."

Izuku halted him when he began to drop, unfastening the buttons on his school shirt, and Katsuki snorted.

"Right, probably shouldn't get cum on the uniform, huh?"

"Probably not the best idea," Izuku agreed, stripping the shirt away and leaning in, biting down on a nipple just to hear Katsuki gasp. "Pants too."

Katsuki shoved them down, kicking them off his ankles while Izuku set to work on his own uniform, and soon they were both bare and unashamed, almost eye to eye now that Izuku had finally started to grow. 

"On the floor, whore," Izuku whispered, sending a shiver down Katsuki's spine. "I want to see you on your knees."

"Someone is demanding today."

"Now, Katsuki."

Katsuki raised an eyebrow, but obeyed all the same, looking up at Izuku and waiting patiently for his next instruction. Izuku stuck two fingers deep in Katsuki's mouth, dragging his thoughts back to just a few days ago when the same two fingers had been pounding the life out of him, the hot lips wrapped around his cock. He shuddered.

The fingers pried his jaw down, opening his mouth up wide, and Izuku stuffed himself in with no hesitation, no build up, straight to the back of Katsuki's throat despite the muffled protest that came with it.

"No gag reflex, huh?" Izuku smirked. "That explains a lot. I guess I can be as rough as I want, then? This is gonna be fun, Kacchan."

Katsuki's eyes watered a little but he let Izuku wind his fingers into his hair, didn't protest or fight when they slowly started to pull him back, then drag him in close again. Izuku leaned back against the wall for stability, moaning quietly, and began to move Katsuki's head faster.

Katsuki relaxed and let it happen, wondering exactly when it was that he'd decided he was okay with being subjected to shit like this. When it was, in fact, that he'd started to enjoy it. He was like Izuku's personal sex toy, just a mouth to be fucked hard and fast, eyes glazed over, drool trickling out the corner of his lips. He shouldn't be enjoying it.

God he was enjoying it.

He flicked his tongue a little, earning a gasp from Izuku above him, and his eyes flashed with a challenge when they met hazy green irises. 

Izuku moved faster, thrusting his hips to meet the pulls, and Katsuki whined every time the tip hit him, precum stinging as it trickled down the back of his throat. Short, hard puffs of breath parted Izuku's lips, straining to keep himself breathing at all, and Katsuki moaned, knowing full well that it would send vibrations cascading through the shaft. 

"Yesss," Izuku slurred. "Again, Kacchan. Moan for me like a little bitch."

He almost considered protesting the word, protesting the name-calling in general, but while his mind debated the merits his throat was already humming again, obeying without hesitation. He cursed himself for it, but Izuku didn't seem to care about the tumultuous emotions running wild in Katsuki's brain, he was too busy throwing his head back in the hottest way Katsuki had ever seen, sweat beading on his forehead.

Izuku's other hand joined the party, all ten fingers clutching at blond hair, and with a last whine from Katsuki the fluid shot down his throat with a vengeance.

"God you feel good around me, Kacchan," Izuku panted. "Nothing else compares."

"Yet," Katsuki said quietly, as the softening cock slipped from his lips. "One day."

"Yeah?"

"If you want."

Izuku smirked, cupping Katsuki's jaw in his hand and tipping it back, looking at the gorgeous pink flush that spread across his cheeks. He was such a pretty thing, despite what some people might claim. He'd heard people call Katsuki ugly in the past, for his scowls and glares, but those people just hadn't looked close enough. 

Katsuki had the most intense eyes he'd ever seen, blindingly bright. 'Red' didn't begin to cover the way his irises swirled with shades of anger and lust and passion and danger, even of love if you looked deep enough, at just the right time to catch it. His skin was smooth, unmarred by the typical teenage blemishes, and as of yet unscarred by battle wounds. Izuku hated to admit that he feared the day Katsuki would be scarred for the first time, purely because he hated the thought of destroying his beauty. 

"Scars are hot," Katsuki protested, making Izuku blush. "You done muttering?"

"I didn't realise I was doing it. You're just so pretty."

"Shut up."

"Make me."

Katsuki let out a low growl, the intimidation factor completely negated by the fact that he was still on his knees with his head in Izuku's palm, like a puppy waiting for his treat. Izuku squeezed lightly, contorting Katsuki's lips into a little pout, and smirked to himself as he crouched to meet his eyes.

"You've been a good boy for me today, Kacchan. Would you like a reward?"

Katsuki's eyebrows knitted together into some attempt at a scowl, Izuku's hands preventing him from getting all the way there, but when he began to protest Izuku squeezed his jaw a little tighter, forcing his head back again to quiet him.

"Yes or no, Kacchan. It's a simple question."

Katsuki growled.

"Don't spoil it now, sweetie. You were so good for me."

"Fuckin' fine," he forced out between pursed lips. "Do it."

"You're gonna have to do better than that, Kacchan, and you know it."

Katsuki's eyes dropped to the floor, and Izuku released his chin, letting him look away as he considered the proposal. Instead he reached for Katsuki's hair again, petting him gently, pleasantly surprised when no yelling or cursing came from his friend's lips in response.

"Let's try again, Kacchan," Izuku smiled. "You've been such a good boy for me tonight, would you like me to give you a reward? It's your decision, if you say no, we can stop here and part ways and we never have to speak of it again."

"What happens if I say yes?"

The question was quiet, but Izuku was close, and he giggled a little at the nerves shaking Katsuki's stubborn voice.

"I'll make you so happy, Kacchan," he assured him, scratching lightly at Katsuki's scalp and feeling him lean into the touch. "I'll finger you until you're begging me to let you cum without even a hint of dignity or reservation."

Katsuki wasn't sure when Izuku had become so blatant about his dirty talk, but the twitching of his dick between his squeezed thighs suggested maybe he didn't hate it as much as he would claim. 

"No questions asked, right?" Katsuki said softly.

"Yeah. Do you want something else?"

"More."

"More?"

"I want..." Katsuki shuddered, cursing himself for the words about to leave his lips. "I want you to hold me down."

"I can do that."

"Even... Even if I squirm, I want you to... To overpower me. Show me how strong you've gotten."

Izuku's eyes widened a little, but still he nodded.

"You're gonna have to pick a safe word, then. Just in case, you know?"

"I'm not a bitch."

"Even the strongest heroes have safe words, Kacchan," Izuku chuckled, using both hands to ruffle the blonde spikes he'd come to adore so much. "Everyone has their limits and their reasons. Hell, Kacchan, with all the spicy food you eat, you might have to safe word it out before you sh-"

"Okay, okay!" Katsuki insisted, blushing. "I get it, okay?"

"Preferably something you think you can say through a gag. You know, just in case."

Katsuki gaped at him, not quite certain if Izuku was kidding or not, but the little grin gave away no answers.

"Katsudon."

"Huh?" Izuku blinked at him, but no elaboration came. "Am I allowed to ask questions this time?"

"It'll distract you," Katsuki explained, with a hint of a smirk. "Get your mind off your dick and into your stomach."

Izuku laughed, and something about the sound was so genuine and happy that it made Katsuki smile too. 

"Katsudon it is," Izuku agreed. "Think you can say it through a gag?"

"Half of it's my name, I feel like I've had enough practice saying it."

"Fair, okay, we'll try out that theory some time. Alright my good little boy, time to make your decision. Yes or no?"

"Yeah."

"Yeah?"

"Yes please," he muttered, looking away again. "I want my reward."

"There he is," Izuku grinned, hooking his arms around Katsuki's waist in a brief hug before he threw him at the bed. "I like hearing my little slut be so polite for me."

Katsuki grumbled a little, quickly distracted by Izuku pulling his wrists together, shoving them up over his head.

"If your hands leave the pillow," Izuku began, his voice dropping an octave. "I'm going to spank you. Is that understood, Kacchan?"

Katsuki nodded, swallowing hard, and Izuku gave him a pointed look.

"I understand," he confirmed, somehow managing to keep from tripping over his own tongue. "I'll keep them on the pillow."

"Such a good boy," Izuku praised, his voice returning to normal in a heartbeat. "So proud of you, Kacchan."

Katsuki dick twitched again, like the traitorous bitch it was, and this time Izuku saw everything. A smirk twisted across his face, and he leaned in close, feeling heat radiate off Katsuki's body.

"If you keep doing what I ask, I'll give you lots more praise. I promise."

Katsuki swallowed heavily, nodding again, and this time Izuku deemed it an acceptable answer. He moved his hands to Katsuki's thighs, keeping eye contact the entire time as he pried them open, leaving Katsuki exposed. He ran his thumbs along the crease where Katsuki's ass met his thighs, then slid his hands beneath the toned body to squeeze at the firm muscles. You'd never know it, with the way he wore his pants so baggy, but Katsuki had a gorgeous little ass, and Izuku could spend an hour just squeezing and biting if Katsuki wouldn't get impatient about it.

Then again, Izuku was in charge today, so maybe...

He smiled to himself, leaning in to place little nips along the roundest part of the muscle, humming happily as he lifted Katsuki's hips to nuzzle against the cheeks. They were warm, just like the rest of Katsuki's body, and Izuku could only imagine they'd make an amazing pillow.

"I can't wait to see these stained with my handprints," Izuku grinned, when Katsuki shifted impatiently against him. "They're gonna look so good all bruised and marred."

"You don't trust me to keep my hands still?" Katsuki huffed.

"Not at all, Kacchan. Not once I get started with you."

"I never back down from a challenge, nerd."

"Oh, I know," Izuku grinned. "I'm counting on it, Kacchan."

He pushed the legs apart again where they'd crept together, but let his ass fall back onto the mattress, his dick already dripping wet with the foreplay alone. Izuku took his time touching and biting and savouring every curve of Katsuki's ass and thighs, moaning to himself as if they were the sexiest thing in the world, his hands caressing Katsuki's slim waist again and again. 

"So tiny," he murmured, nuzzling into the short, dark hairs around Katsuki's abdomen. "Your waist is so little, Kacchan."

"Shut up."

"Mmm, no."

Katsuki growled but didn't protest, and Izuku smiled as he dipped his head lower, still holding Katsuki's waist as he lapped a trail of precum from the desperate dick. It was too much fun to see Katsuki ache for his touch, too entertaining to make him wait.

Katsuki broke too soon, even for Izuku's expectations, which were not high to begin with. As soon as Izuku put his lips around the very tip of Katsuki's cock, there were hands tangling in his hair, clutching at him with pathetic little whimpers.

"Roll over, Kacchan."

"H-Haah?"

"You took your hands off."

Katsuki realised his mistake far too late, eyes widening, and with a hand on one hip Izuku easily flipped him, pushing him down when he squirmed. It didn't even take the use of his quirk to pin Katsuki to the mattress, in his desperate, vulnerable state. All he had to do was spread one hand on his lower back, and lean over to stuff his face into the pillow with the other. He fought a little, but Izuku just waited in his position, letting the limbs try and fail to reach him, and after a moment he stilled.

"Done with your little tantrum, Kacchan?"

Katsuki nodded.

"Okay, then you're gonna count three for me. Nice and loud or I might not be able to count it."

He brought his palm down on Katsuki's ass, watching it jiggle delightfully under his touch, kneading at it a little after the strike.

"O-One?" Katsuki said reluctantly, when Izuku waited.

"Good."

Again he struck the pale skin, and his time Katsuki twitched against him, grinding his crotch into the sheets. 

"Two!" he yelped.

"One more, Kacchan."

He brought it down a little quicker for the third, making sure it would sting, and Katsuki moaned, long and loud and uncontrolled. Izuku grinned as he rubbed at the red marks gently, and then Katsuki found himself on his back again in a hurry, his arms pushed stubbornly up above his head again. 

"If you do it again it'll be five," Izuku warned him. "Keep them there."

"Y-Yes, okay."

"Yes what, Kacchan?" he teased. "Did you want to say something else in there?"

"No!"

"If you say it nicely enough, I'll stop all the teasing and stick my fingers in you finally."

"Really?"

"Really. I promise."

"Fuck. Yes. Yes... M-Master."

"There's my sweet boy," Izuku grinned, reaching for the lube. "Was that so hard?"

He stuck his index finger in before Katsuki could formulate an answer, getting a little whimper instead as he pushed down, searching for more already. Izuku made little circles again, sticking with the patterns that seemed to work just a few days ago, and watched Katsuki's ass chase him as he began to pull back. Smirking, he thrust it in deep, losing Katsuki to a moan long enough for him to slip it out unimpeded, lubing up the middle finger as well, and by the time Katsuki looked up to find him again, he was already on his way to rub at the opening playfully. 

It took a few minutes for Katsuki to remember what he had to do, to relax and stay still and let Izuku do his job, and the way his breath shuddered as he tried was pure testament to how damn much he needed this touch. 

Izuku didn't bother to tease this time, slipping his fingers inside with a little effort and patience, and when Katsuki seemed to settle, he wrapped his free hand around the base of a flushed cock. 

"Ready for me to move, Kacchan?"

"Yes M-Master."

Katsuki didn't even last three minutes. When one hand pumped at his cock and the other thrust and curled at his prostate, he barely found the self-awareness to breathe, let alone to try and hold himself back. He came in a blur, only registering that the first burst hit Izuku in the chest before his fuzzy vision gave way to heavy eyelids.

"Good, Kacchan?" Izuku teased, gently releasing the shaft and reaching for an old towel to clean them up. 

"So good," Katsuki agreed breathlessly. "Gimme a minute."

"Take all the time you need, Kacchan," Izuku assured him. "I'm not gonna kick you out looking drunk like this."

"It feels good."

"Yeah, I know, I'm glad."

"Next time I'll make you feel good, okay?"

"You did," Izuku laughed. "You went first, remember?"

"That was nothing on... On this. I'll think of something. Promise."

"Okay, Kacchan," Izuku smiled fondly, leaning in to plant a kiss on his sweaty neck. "I look forward to it."