Archive of Our Own

Katsuki stared down at his phone in disbelief. No new notifications. No texts, no memes, no voicemails left for him to discover after a long day of patrolling. Nothing. Radio silence. His boyfriend of nearly thirteen years had never gone an entire shift without at least texting him once, let alone the gurling double shift he just came off.

Not to say Katsuki was controlling, or monopolizing Deku’s time. He wasn’t. Well… He kinda was. But it was all part of their relationship. Even as kids, back when they were only friends, Katsuki had a tendency to bully his quirkless friend. As they grew older their relationship developed. What started as friends bloomed into mutual crushing between the two idiots, and grew into a loving and prolonged relationship. For Katsuki, it was always Deku. They were always together. He loved him with everything that he had.

But the way he showed his love and dedication came with mixed responses.

Deku’s friends had voiced their concerns, hell, even Katsuki’s merry squad of idiots mentioned their dynamic. Everyone was worried for Deku. Bakugou was mean, and loud. He said terrible things to his boyfriend, called him worthless all the time. He threatened to beat him bloody constantly.

Deku’s friends had tried to convince the quirkless boy to leave Katsuki. They offered him a place in their apartment, and protection from his Pro Hero partner. Bakugou understood, from an outside perspective he seemed abusive and downright villainous. There had been so many times where he questioned why he was like this, why nothing made his cock harden like the look on Deku’s face as he cried pinned beneath him. Or the way his freckled skin stood out against the vibrant red ropes Katsuki wound around him. Or how beautiful he looked kneeling at Katsuki’s feel, eagerly waiting for his next command.

Their relationship was unique, but not unhealthy. They had rules and guidelines. Although Bakugou pretended he had control over the much smaller man, Deku was always in control. He mandated what they did, he had the power to stop it with a simple word. True, Katsuki was a downright asshole to his love sometimes, but Deku ate it up again and again.

It started small. While Katsuki attended UA, Deku would spend the weekend in Katsuki’s dorm most of the time. They had spent so much of their lives together, seeing each other everyday, spending time, studying, exploring their budding sexualities together. When they ended up going to different schools it was jarring.

The moment Deku would cross into Katsuki’s room he would find himself pinned against the wall while his boyfriend attempted to kiss the very soul from his body. He keened and relented to every touch, missing his Kacchan just as much.

One day, Katsuki was too impatient. He needed his nerd and he needed him now. He threw the smaller boy onto his bed and ripped his school uniform. Buttons scattered, clacking across the floor. Deku laid, stunned, as Kacchan heaved above him. But instead of feeling scared at the manhandling he received, he was more turned on than he had ever been before.

Katsuki wondered if he had gone too far. His boyfriend was sensitive. He cried the first time they kissed and the first time they fucked. Had he ruined it? He just missed him so much, he needed him, needed to feel close to him. But Deku’s face morphed. A flush rising over his cheeks, blurring those beautiful freckles Katsuki loved kissing. Deku panted, whining as he ground his hips up into Katsukis. Concern changed to excitement and Katsuki allowed himself to get lost in ruining his precious boyfriend.

That weekend they got seven noise complaints filed on them. One of which resulted in Katsuki’s dorm room being broken down as his friends and classmates rushed in to investigate the sounds of slapping, Bakugou’s explosions, and Deku’s crying. None of them were expecting to come in to find their classmate, butt naked as he slapped his tiny boyfriend’s glowing ass, as he was tied to the bed with the ties from both of their uniforms.

It took the newly freed Deku jumping on Kirishima’s back screaming for him to stop hitting Kacchan. So many awkward questions, and a firm scolding from an equally mortified Aizawa, Katsuki being assigned a month’s worth of detention, and the situation was solved.

It took years for Deku to be able to look Kirishima in the eye again. Katsuki on the other hand was so proud to call the redhead his best friend, seeing him go feral in order to protect Deku.

x

It was years into their stumbling teen years when they learned what they did had a name, and a community. BDSM, an imposing acronym, but it fit their relationship perfectly. Katsuki did nothing half asses, so he threw himself into the wide world of kink, determined to learn all he could. He paid close attention to safety, aftercare, and consent.

By the time Deku came over, Katsuki had a kink checklist printed out, ready to explore more with his beautiful boyfriend.

Deku, being the fucking nerd he was, also did his share of research. He came for their normal weekend sleepovers equipt with his All Might pillow, a new video game he was excited to play with Kacchan, and a notebook filled with ideas and fantasies for the two to try.

Needless to say, they never got around to playing the new game, that weekend or the following three.

When they both graduated high school they found an apartment together. Bakugou joined Kirishima working as Fatgum’s sidekicks.

Finally, after years of having to squeeze in their private moments between classes, family, and friends, the two had a place of their own where they could be themselves whenever they wanted.

Neither man wanted a full 24/7 dynamic, it didn’t fit in their busy lifestyles. But small rules were added slowly. Katsuki bought Deku a number of floor cushions so he could keel comfortably at Katsuk’s feet. Deku had to ask permission for sweets, and only allowed the mochi he constantly craved when he had completed all his studying and assignments. Katsuki’s favorite rule was having Deku wait by the front door to greet him when he came home, unless he worked the night shift, then he was expected to be in bed long before Katsuki came home.

Their dynamic grew to Deku texting him when he was leaving the apartment. Bakugou never confined him to their home, but he loved that Deku checked in with him. Simple, ‘getting some tea with Uraraka!’, ‘Just finished my final, wow! It was a doozie!’ ‘It’s such a nice day! I’m going to watch the ducks at the park!’ often accompanied by cute pictures. It helped him get through the day, knowing who was waiting for him at home.

It also soothed that anxious voice that never fully went away. Deku never grew. He stayed an adorable 5’4 keeping his slight form. Bakugou had been dragging the nerd to the gym with him a few times a week so he would stay healthy, but he never packed on muscle, staying skinny. Over the years he gained some definition, but still stayed the ‘fuckable twink’ Katsuki loved to ruin.

His nerd was clumsy, fragile, and seemed to be a magnet for danger. It didn’t help that if a fight broke out near him, instead of running for safety, Deku often got closer to the action to get a better angle on the story.

He felt better knowing where Deku was and knowing he was safe.

X

Deku worked a number of odd jobs while in university for journalism, but they were just work. He didn’t feel the same as Kacchan, he didn’t love what he did. Sure, working at the coffee shop, or the university’s bookstore wasn’t terrible, but he didn’t wake up every morning eager to go to work. What he really wanted to do was journalism. He wanted to report on hero statistics, interview them, show the world the side of heroes they seldom got to see.

On the side, Deku started a small blog to hold him over. It started off with small posts, predictions of the newest rankings, spotlights on newly debut heroes, information on new merch lines and when they would be dropping. Kacchan helped him in anyway he could, seeing the joy and fulfillment he gained from his blog. He found information for him, offering to bring some of his hero friends over so Deku could pick their brains. Anything he could do for his love, he did without a second thought.

Soon the small blog erupted. Deku started earning sponsorships, some directly from the heroes he talked about. What used to be a hobby quickly turned into a full career. Deku would stream four times a week, updating his eager followers on the latest hero news. He did recaps of large scale fights, reviewed hero merchandise (often before it was released to the public) and hosted one on one interviews with some of his closer hero friends.

Katsuki could not be more proud of his nerd. After Deku graduated Katsuki encouraged him to pursue it full time.

The second room in their apartment was converted into Deku’s office. There he could leave his streaming equipment up all the time instead of having to take it down after each show.

Working from home provided a lot of positives, Deku could set his own hours, so he often matched his Kacchan’s schedule so they could spend more time together. He loved making content and never ran out of things to say about heroes, so he never stressed about uploading or what to talk about. On the days between his streams he would research, easily falling down the rabbit hole of the internet.

There lay the one issue Bakugou had with his boyfriend. The asshat was terrible at taking care of himself, especially when it came to peeling himself away from work. Too many times Katsuki had come home from work to see Deku hunched over a screen, still wearing his pajamas from the night before.

Deku had issues remembering to eat, drink water, get up and stretch, or even shower regularly if left alone. The pull of work was too alluring. The neverending cycle of clicking. More articles, more videos, more, more, more. There was always more. Deku found it hard to stop.

Oftentimes, he didn’t realize what was going on around him. He would sit at his desk, clicking through his browser for what felt like ten minutes, only to look around him and realize the sky was dark and his body was screaming at him.

One day Bakugou came home to find Deku unconscious on the bottom of their shower while freezing water pelted over him. The idiot had gone too long without food, hopped in the shower, got overheated and passed out. No damage was done, and he was right after a quick round of quirk healing from the onstaff doctor at Katsuki’s agency. (It was normally against protocol for the healer to work on anyone outside of the agency, but you try telling Dynamight no when it comes to his boyfriend).

After that they both came up with a set of rules to prevent a situation like that from ever happening again.

Deku was to take a short break of some kind every two hours. He was required to share a picture of his lunch with Katsuki, to ensure he was eating properly. He also had a small workout regime he needed to complete, including a light walk outside, assuming the weather was nice, and a 20 minute stretching routine. He was expected to shower, and get dressed in something other than pajamas. Katsuki didn’t care if Deku wore sweats or other lounge clothes, he just wanted him to wear something different and fresh. He had read up on stay at home workers falling into depressions and unproductive ruts. He didn’t want that for Deku, so he helped him create better habits to prevent him from slipping into an unhealthy mindset.

Deku agreed to every one of his rules, particularly enjoying the encouragement to text Kacchan while at work. Even if he rarely got a response, the act made him feel closer to his boyfriend. And a quick peek at his camera roll told him that Katsuki loved the little pictures he sent him, seeing as he saved every single one.

Of course, Deku had off days. Days where he didn’t feel like working. Days where he felt overwhelmed and just needed to unplug. On those days all he had to do was text his Kacchan ‘Red’ and his rules and expectations would be suspended for the day. Katsuki would come home, wrap his love in a large hug and do all he could to make him feel better.

Sure, their relationship wasn’t for everyone, but they didn’t care about everyone. They loved each other and it worked for them. Nothing else mattered.

X

So yeah, Bakugou was pissed.

Okay… Maybe pissed was the wrong word. He was worried, confused, exhausted. His shift had him running around like a crazy man. Arrests here, rescues there, scaring punk kids away from a life of crime, and to top it off he was saddlebaged with two interns. Yeah, sure. The kids were skilled, had impressive quirks, and were so eager to do anything hero related. But he had to teach them literally everything. It was grueling, on top of the already impossible double shift he had just worked.

He dragged himself to the agency’s locker room, quickly scrubbing off the grime of the day. As much as Deku loved seeing him in his full hero costume, fucking fan boy that he was, he wasn’t in the mood to be bothered by every other fan in the city. He just wanted to go home, snuggle his Deku, maybe watch some TV, and sleep for the next twelve years.

But as he changed into his civilian clothes he checked his phone, expecting the entourage of cute texts. But there was nothing. The last text that Deku had scent him was from that morning.

`It's later Kacchan!’ his annoying response to Katsuki telling him to text him later as he kissed him goodbye. Fucking brat.

But there is nothing else. No pictures of his lunch, no text about a cute dog he met, no blubbering voicemail about how Deku misses him. There is nothing but the sarcastic text sent before he left their apartment.

Immediately he called Deku, his mind going to the worst scenario.

Rinnnnnnng…..

Rinnnnnnnnng…..

Rinnnnnnnnnggggggg….

Rinnnnnnnngggggggggggg…...

“Hey! You’ve reached Midoriya! I’m not near my phone but if you leave a message I’ll be sure to call you back!”

Katsuki ended the call, taking every ounce of self control not to toss the fucking thing across the room. He needed it in case Deku called him the fuck back.

He rushed out of the locker room towards the roof. Normally Katsuki would take the train, especially after a long shift like this, so he can read up on his love’s day. He would look at the texts and scroll through all of the social media platforms. Pictures here, cute updates on twitter there. He saved the streams for later, watching them all on playback if he couldn't watch the real deal. Oftentimes, Katsuki put Deku’s streams on while filing paperwork to keep him company.

But now his muscles were screaming at him, his nitro levels low, but he couldn’t wait. He propelled himself off the roof and into the sky. He didn't want to know the kind of headlines he was creating, but all he could think of was his precious Deku.

He remembered finding him, unresponsive in the shower, shivering and pale. Katsuki had been kidnapped, threatened, stabbed, shot, held hostage, and stalked but he had never felt as scared as he had in that moment. Deku was his life. His everything. Without him… Fuck.

He landed on other buildings, allowing his aching body a few moments of rest before continuing on towards his apartment building. Deku still hadn’t called him. His grounded his teeth together.

Suddenly as he launched himself between buildings a horrible thought crashed over him, icy terror catching him off guard, so much so that he almost faltered in his trajectory, an extra blast that jammed his shoulder into the socket saved him from painting the concrete below. He managed to roll onto the safety of the next building as the waves of anxiety took over.

Deku and his relationship has never been a secret, since he won the sports festival his first year of UA and celebrated by impulsively kissing the nerd on national TV, live national TV, the world had known about him and the nerd. He had brought Deku to every ranking ceremony, paparazzi had followed them on their dates, spattering the internet with pictures of them holding hands, kissing, feeding each other bites of food, and other coupley things. Hell! Katsuki had interrupted Deku’s streams a few times, planting a kiss on his cheek before his thousands of viewers.

The world knew what Deku was to Katsuki. That included the scum of the earth. It wasn’t unheard of for Hero’s family and friends to be taken for ransom. It happened everyday. It was why he needed to know where Deku was at all times, he needed to be sure he was safe. Each buzz of his phone, tucked away in his pocket was a refreshing reminder that Deku was okay. He was safe. He knew if there was ever an emergency Deku would activate the distress signal on his phone. The nearest hero agency would come to his aid and alert Katsuki of the situation.

Suddenly images of Deku tied down, chubby cheeks stuffed full to muffle his cries, and tears raining down his face were no longer arousing to him. The thought of some disgusting villain putting his hands all over his sweet Deku was too much to deal with.

With new determination he continued on, desperate to get home. He needed to find Deku. He prayed to whatever God he could think of that he was okay, that everything was fine. That he wasn’t in danger, he wasn’t hurt. Or worse. Fuck. No. Katsuki couldn’t even allow himself to think of that as an option. He just needed to get home.

He found himself on the balcony of their apartment quickly, heaving breaths of air into his starved lungs. Never in his life had he pushed himself so far so fast. His arms felt like they were seconds away from falling off.

Coming into their quiet home, nothing seemed amiss. The door was shut, their security system on and beeping at Bakugou’s entrance. He quickly typed the code to stop the alarm, and continued to investigate. The furniture was all in place, no sign of a struggle or attack. The apartment was spotless, aside from the collection of clean dishes drying on the rack.

“Deku?” He called out, hearing nothing else in his apartment. He took each step carefully, guard up and ready for anything. The bathroom door was open and dark, so was their bedroom. He rounded the corner and heaved a heavy sigh. Deku’s office door was closed, but the blue and purple lights shone from under the door.

He opened it carefully to see his precious baby hunched over his desk. His eyes scanned over the screen behind thick blue light protective glasses as he muttered to himself, one hand on the mouse while the other scribbled notes in the overflowing notebook open in front of him. Deku was wearing the same ‘Dynamight’ shirt he was wearing this morning and boxer shorts.

Katsuki allowed himself one moment to be relieved. All his worries were for naught. His Deku was safe and free of harm. For now.

“Deku.” he calls gently. Said man reacted like he was electrocuted, jerking back from his desk and nearly tipping over his chair. His chest heaved, not unlike Katsuki’s moments before. His wide eyes shine in the purple and blue LED lights around the room.
“K-Kacchan? W-what are you d-doing home so…. Early?” He paused, taking in the even look on Kacchan’s face. Angry Kacchan was normal, something he could deal with. Cold and calm Kacchan was scary. He looked around the room, taking note of the window. When he sat down to do a bit of research the sun was high and bright. Now it was dark, stars beginning to shine.

“Oh….” He whispers softly, realising what happened. After the last ‘incident’ Deku had set alarms on his phone to keep this from happening again. His phone, if he remembered correctly, was still in their bedroom hooked up to the charger.

“K-Kacchan…?” He wished his boyfriend would yell. Scream. Call him useless. Anything other than the cold look that had him pinned to his chair. He tried to apologize, but the words got stuck in his throat. He hated disappointing Kacchan. He hated breaking their rules. It made him feel so terrible. He could feel the tremor in his hands.

In lieu of speaking Katsuki extended his hand, one finger becoming Deku forward. It was a command Deku was unable to ignore. No matter how upset he was at himself, he couldn’t disappoint Ma-Kacchan anymore. He got to his feet, bones popping and creaking. His muscles screamed at being stuck in the same position for so long, each step forward reminding him how stupid he had been.

He stood before his boyfriend, unable to look him in the eyes. He stared at their feet, focusing on his breathing.

‘Deep breath in. Hold. Deep breath out.’

“Color?’ Katsuki asked. Over their years of sexual exploration, they discovered that Deku was a classic brat. He loved to push back, ignore orders, and fight Katsuki at every opportunity. And Katsuki loved making him submit. He loved tearing him apart, beating him, teasing him, edging him, sometimes tying him up and ignoring him until Deku cried beautifully. Katsuki loved earning Deku’s submission. He loved watching that stubborn face fade into blissful subspace. Deku was so sweet, so easy. He would do anything Kastuki asked of him without question. The level of trust Deku placed in him never ceased to make his heart throb.

But Deku hated punishments. Nevermind the fact he loved pain and always asked for more while they were playing. But the second that word was slapped onto the situation, Deku retreated into himself. It made Katsuki want to throw the whole thing out, never subject his baby to those bad feelings again, but Deku explained it to him.

It wasn’t that he hated what Katsuki did to him, Deku hated disappointing his boyfriend. He felt guilty, lousy, useless.

Deku honestly and truly loved their relationship. He loved the rules that gave him structure in his life. He loved having such a kind and doting boyfriend to ensure he was taking care of himself. It made him feel cherished, precious. And even if he slipped up and needed to be punished, he loved the tender way Kacchan put him back together.

So Katsuki always checked with Deku, making sure he was okay with what was going to happen. He always laid out his plan, made sure Deku was aware of everything that was happening, and most of all he ensured Deku that he was not mad at him and that he loved him.

“Deku?” He prompted again, raising Deku’s chin with his hand to meet his eyes. “What’s your color?” Deku sighed.

“Green.” He said finally, following up with a quick, “Sir.”

“Good boy.” He rubbed the thumb over the soft skin gently. “You’re going to listen to me, understand?”

“Yes, Sir.”

“You’re going to brush your teeth, floss, take a shower, and get dressed in fresh clothes. When you’re done, come into the kitchen.”

“Yes, Sir.” There would be no fighting tonight. Deku would follow his order to a T. He needed to make up for disappointing his Dom.

“Good. Now go.” He let Deku go and waited till the bathroom door closed.

While Deku cleaned himself, Katsuki started on their dinner. Before leaving the agency, he debated getting takeout so they wouldn’t have to cook. But Deku only had breakfast today and he needed more nutritious food. He settled on rice, miso soup, and grilled salmon.

As he made the soup he cut up okra to add extra vitamins. Deku disliked it, saying they turned slimy in the soup, but it was one of the few vegetables they had in their fridge. Katsuki would need to go to the store on his way home from work tomorrow. Deku could deal for one night.

Katsuki heard the shower turn off, and soft feet padding into their room. He was adding the last touches onto their meal when he heard Deku come into the kitchen.

“Sit.”

“Yes, Sir.” Katsuki didn’t need to turn around to know Deku was obediently kneeling at their coffee table. He finished plating their dinners, bringing the bowls of steaming food. Deku sat, an image of perfection, head bowed, hands resting on his thighs. Katsuki pushed his shoulders back slightly, straightening out his back, and continued setting the table.

He placed two large glasses of water and sat beside his love. Deku stayed still, not reaching for his food until Katsuki said it was okay. He was perfect. Such a beautiful sub. He reached for his soup, uttering a quiet ‘itadakimasu’ and began eating.

Deku followed, offering his thanks for the meal and started eating too. He stopped, looking at the bowl of miso. Katsuki raised an eyebrow at him, daring him to comment, but Deku only sighed and started eating.

Only a few bites into the meal, Deku’s hunger made itself known. Soon he was shoveling rice into his face, following with large gulps of water. He ate every bit, including the okra.

“K-kachan? I mean… S-sir?” He asks, hands returning to his lap.

“Mmmm?”

“Could… May I have some more soup, and rice?” God Katsuki loved him so much.

“Of course, baby. He got up, pressed a kiss to Deku’s temple and refilled his bowls with rice and soup. This time he made an effort to pick out most of the okra. He still needed the fiber and vegetables, but he had done well so far.

Deku drank his glass of water while Katsuki got his food, pleasing the blond even more. He refilled both of their glasses and continued enjoying the calm silence.

Deku finished every bit once more, including the second glass of water. Baku pushed his own glass to Deku’s side of the table. The smaller man opened his mouth, but slammed it shut when Katsuki’s eyes flashed a warning.

‘Don’t you fucking dare.’ So Deku drained the glass, earning another kiss in return.

Together they cleaned the dishes, working comfortably together. But Katsuki could see the tremors starting up again. Deku knew what was next.

“Come.” Deku followed Katsuki to their room, where his phone lay on the nightstand. If he hadn’t forgotten it they wouldn’t be in this situation now.

Katsuki sat on the edge of their bed, and Deku goes to follow.

“No. On your knees.” This was not uncommon. Actually, when both Deku and Katsuki were home Deku often knelt at his feet. The physical example of submission helped Deku to unwind after a long day. Over the years, he found it difficult to separate work and home in his mind, seeing as his work and home were the same place. That’s what inspired most of their rules, like getting showered and dressed. It was a way to menally separate personal time from work. This was similar, but as a way to decompress.

The rug beneath their bed was soft and cushioned, a thin yoga mat placed underneath to protect Deku’s knees. He could, and had, spent hours at his Dom’s feet, face buried in his thigh while he floated in subspace.

But that wouldn’t happen tonight.

“Tell me what you did wrong.” Communication, a tool to help Deku realize the punishment was for his behavior, not him personally.

“I… didn’t take care of myself.” He started.

“Go on.” A large hand settled on Deku’s head, running through the damp curls.

“I… I didn’t shower, or brush my teeth… I stayed in my pj’s all day.” Tears were forming in his eyes. He tried taking a deep breath to steady himself, but it didn’t help. “I worked all day without breaks. I forgot to eat or drink water. I didn’t move my body. I just kept working.”

“And…” Katsuki prompted. Deku stopped, running through their list of rules. He couldn’t think of another one he broke. He didn’t endanger himself by running towards a fight. He didn’t push himself too hard while working out. He didn’t say bad things about himself. He couldn't think of anything else he did.

“And?”” He looked up at Katsuki, confused.

“You didn’t text or call me all day. No clue that you were okay. You didn’t answer my call when I got off work either.” His voice was soft, uncharacteristically soft. Deku’s eyes overfilled as he realized. “I was worried about you, terrified something happened, like last time.” Deku cringed at the memory. He woke up to see Kacchan crying over him, something he never wanted to see again.

Both hands moved to Deku’s face, cupping it. So much power and destruction came from these hands, but when Kacchan held Deku like this, he was so gentle, so careful.

“You’re so precious to me, baby. I thought the worst had happened. Izuku,” Oh no! Kacchan was using his full name. “You are the only thing that has ever mattered to me. Without you I’m done. There is no me without you. I need to know you’re safe. I need to know someone isn’t going to hurt you or take you away from me, do you understand?” Sobs overtook Deku.

“I’m so sorry!!” He blubbers, darting forward to wrap his arms around Kacchan’s leg. He held him tightly, relishing as those large hands that made him feel so safe run over his hair and back. “I’m sorry! I’m sorry! I’m sorry!” He cried out over and over again.

Bakugou had struggled with nightmares since he had been kidnapped by the League of Villains his first year. Only in each dream, Deku was there with him, subjected to the torment of those scumbags. He woke, sometimes several times a night, desperately grabbing for Deku, holding him close to know he was safe, that Shigaraki hadn’t killed him, that Dabi hadn’t burned him alive, or worse… that Toga didn’t make off with him while Kastuki fought.

It was Deku who brought him back to reality each time, kissing his face, whispering that he was okay, that it was only a dream, that they were fine. It didn’t matter how many times Katsuki had the same dream, it terrified him over and over again.

Deku hadn’t even thought of that. He had just wanted to check a quick news report, but the cycle of clicking sucked him in. He knew he was like this, that's why he had his phone to remind him so he would get up and text the love of his life, so Kacchan wouldn’t worry about him while trying to save the world.

Katsuki wanted to let his sensitive boy cry for a while, but he needed to move on before he got too worked up and exhausted himself. He lifted his face, making Deku look into his eyes. Fuck, he looked so goddamn beautiful when he cried.

“I know you’re sorry, baby. And I’m not mad at you.”

“You’re not?”

“No. Never. But you broke the rules and need to be punished. Afterwards all will be forgiven and we can move on. Okay?” Deku nods and allows Kacchan to help him up and over his lap. A pillow given for him to hold and rest on, which he gladly clings to. He’s still crying, still upset with himself, but the violent sobs have faded to slight hiccups.

Katsuki takes his time, rubbing large hands up and down his baby’s body. Over his shoulder, down his back. He works out the tight muscles. Sitting all day in that horrible hunch Deku adopts subconsciously is terrible for him. He works the tighter knots out, allowing Deku to ground himself.

Slowly, ever so slowly, Katsuki peels the loose shorts, that are most likely Katsuki’s old ones, off of Deku’s hips. His baby raises them, like the obedient, sweet boy he is. He allows the fabric to pool around his knees, lightly binding his legs together.

Deku whimpers as the cold air hits his bar bottom. It was obvious, the position he was in what was about to happen. But with the final barrier gone it all seemed so overwhelming.

Now gliding his hands over the plump bare skin, Katsuki can feel that haze setting over him. The one that keeps him hyper focused on Deku, trained on every sound, every touch, every inch of his body. Nothing else in the world exists beyond him and Deku. Just the two of them. Deku’s cries become his mantra, his whimpers a prayer.
He lightly traces some of the darker freckles with his finger, drawing nonsensical patterns as he speaks. “You’re going to count them and apologize for each one. We’ll do ten, then take a break before continuing. Understand?”

“Y-Yes… M-mat-ter.” the response surprised Katsuki for a moment. Master was the title Deku slipped into when he was in subspace, but he knew Deku well. He wasn’t dropping.

“What do you say if you need me to pause?”

“Y-yellow, Mater” His voice much firmer now. He was feeling more grounded. He was still nervous and filled with shame, but he had his master with him. Nothing bad could happen with his master watching over him.

“Good boy. And what do you say if you need to stop?”

“Red, Master.”

“Good boy.” He didn’t hesitate, raising his hand and bringing it down firmly, landing on both Deku’s cheeks. He returned, tracing the freckles that would soon disappear behind the angry flesh.

Deku cried in surprise more than pain. Master always made sure to warm him up and ease him into any impact play. Punishments were no exception. The sound of contact was more shocking than the hit itself.

“O-one, I’m sorry, Mater.” as soon as the words left his mouth Katsuki’s hand was coming down again, this time aiming for one cheek specifically. The already tender flesh stung as it was hit again, but Deku managed to keep his cry muffled. He was expecting it.

“Two.” He remembered to breathe. Breathing made the pain easier to deal with. It kept him from feeling light headed. It made each hit tingle in a beautiful way. Guilt was still heavy in his stomach, but Deku could feel his cock filling from the attention. “I’m sorry, Master.”

Deku was expecting the other cheek to be timed. Master was being kind, keeping a steady rhythm to follow.

“Three. I’m sorry, Master.”

Katsuki allowed the smile to slide over his face. Barely any attention, and his baby’s skin was so pink already. He could see the outline of his hands in the supple flesh. His baby was so perfect, so responsive. He felt his cock filling against his leg, desperate for any attention. Not that his own was doing much better. Once again he brought his hand down, this time lower, closer to his baby’s legs.

This time instead of crying out, Deku moaned, a lewd noise straight out of Katsuki’s dreams.
“F-four. I’m sorry, Master!” Katsuki allowed himself a breath, hungry eyes raking over his baby. He broke his steady pattern, seeing Deku tense below him in preparation of the next hit. But Katsuki held back, waiting till he saw his shoulders drop with a heavy exhale before bringing his hand down, harder this time.

“Fuck!” That one actually hurt. Not bad, but worse than the last few hits. “Five! I-I’m sorry M-master!” A delicious idea popped into Katsuki’s head, and instantly brought his hand down once, twice, and a third time. Each slap growing with intensity.

“Ahhhh! M-Mmmmm… Six! Seven! E-Eight! I’m sorry! I’m s-s-orry! I’m SORRY!” He cried out heaving a sob. He never fully stopped crying, but now he was back, tears rolling down his cheeks and soaking the pillow he clung to. Master didn’t say he couldn’t bury his face in it, but he said he wanted Deku to count his spanks. So he kept his face turned so his voice would be clear. Master loved to hear him moan, and cry, and whimper.

His skin was tingling, growing stronger with each hit. “Nine! I’m- fuck- I’m sorry, Master!” The last hit was the hardest thus far, Deku screamed. “Ten! Ten! Ten! I’m Sorry! Master! I’m sorry! I’m so sorry!”

Katsuki chuckled at his desperate cries. Such a good little sub. “Good boy.” He leaned forward to kiss his sweaty brow, moving lower to lick one of the tears and bite into the meaty cheek. His baby whined, but allowed Katsuki to torment him, like always. “You’re so perfect. Master is so proud of you.”

“M-m-master” Deku whined. Master stayed close to him, resting his face against his, breathing the same air. It was an awkward angle, something that couldn't have been comfortable for Master, but he needed him close.

“You’re taking your punishment so well.” Deku sobbed when Master pulled back, only to be shushed gently, Masters hand brushing back his wet hair. “Color?”

“Green.” His baby responds instantly. Katsuki’s grin turns feral as he winds his hand back and crashes it down on the pink skin. Deku screams, one moment he was nuzzling his Master the next pain exploded from behind. His nerves danced as he clenched his teeth together.

Katsuki offered his baby a moment to gather himself, that hit was rather mean. But Deku continued to whine while his hands fisted the pillow he held on so tightly. He tutted softly.

“Aren’t you forgetting something?” He leaned low and whispered darkly in his ear.

“E-eleven! I’m s-sor.” Words were getting hard to spit out. “Sorry, Master!”

The cycle continued, Katsuki striking a new patch of skin with each smack. The globes of Deku’s ass and the tops of his thighs glow that beautiful red color, the one he loved so much.
He gives Deku another break after twenty, allowing the small boy in his lap to catch his breathing. He’s crying loudly between hits, but takes his punishment beautifully. Katsuki is always so proud of him and his endurance. It’s not easy to go toe to toe with a Pro Hero, especially Katsuki with the focus his quirk has on his arms. Each blow is powerful and resonates deep within Deku’s psyche.

He’ll never break a rule again, as long as he lives. Well, at least for the moment. He’ll do really well for a long time, but slowly slip into bad habits again, and Katsuki will always be there to put him back in his place.

The next hit Katsuki pours heat into his hand. Not enough to blister the skin, but enough to add an extra layer of pain. He doesn’t stop either, he just keeps going, letting Deku struggle to count as he wails on him.

“Sor-rry! M-master!”

“I’m going to beat you fucking bloody. Do you fucking hear me? I’ll make it so you’re too sore to sit, fucking make you take breaks you useless peice of shit!” Kasuki felt feral. He felt alive, all the exhaustion from the day melting away with each explosion against his baby’s skin. His cock strained against his pants, but he could wait. All that matters was painting the skin with a rainbow of bruises.

“P-please… Stah. Stop! Mast-ter! C-can’t!” Deku can’t catch his breath. His diaphragm has been pressed against one of Katsuki’s legs, digging in and keeping him from fully breathing. The added pain, the slight explosion on his skin, and the relentless downpour of pain keeps him gasping.

“Yellow!” He calls out, firm. Instantly the blows and explosions stop. Hands are on either side of Deku’s face as Master peers into his eyes, eyebrows furrowed in concern. Deku wants to smile at him, but he’s panting too hard.

“Just..” he huffs. “Need a mo-moment.”

“Of course, Baby.” Master presses his face against his. It’s really uncomfortable, Deku’s neck is crained so far to the side, but he relishes in the feeling of Master being so close to him. He takes a solid deep breath and pushes forward, kissing Master properly for the first time since that morning. It should be a crime for him to go that long without kissing.

Their lips move slowly, almost sleepily. The emotional toll is getting to Deku, Katsuki knows. He kisses Deku once, twice, and a third time before pulling back.

“You okay, baby?” He nods into the pillow.

“Yesh Masher…Green.” His words slurred by the fabric. Master chuckles, running his hand over his body. Deku twitches and whines as gentle hands cross over his inflamed skin. It is tender to the touch.

“You sure?”

“Yesh. Pleashe.” Deku pulls his face away from the pillow to look over his shoulder. “Please Master.” Katsuki is so in love, so hopelessly and completely in love with his Izuku.

“Okay, baby. Five more. Then we’ll be done. Sound good?” Deku’s sleepy smile turned outright wicked.

“Don’t go easy on me.” And fuck if every ounce of blood didn’t crash directly into his cock. And who was he to deny his baby of anything? Quirk loaded, he slammed his hand down on the area right above Deku’s cock. During his research all those years ago he learned that sensitive nerves tied to the genitals were crossed in this area. He had ripped many orgasms out of Deku while playing, but never during a punishment. He was determined to do so now.

Deku’s scream faded into a moan, the pain feeling so good. His skin felt warm. God he loved this. He loved his Master so much.

“I Lo-” the next hit interrupted him, dragging more of a moan from him. “Love you, M-master.” Master chuckled, hitting him once more. His body was tight, feeling like it was on fire.

“I love you too, baby.” He sounded breathless. “You gonna be a good boy for me?” Deku nodded into the pillow.

“Yes! Yes! So good! So good for Master!” One more smack sent his toes curling. Master leaned down, low in his ear.

“Then be a good boy, and cum for me.” The last spank sent waves of electricity through his body. He didn’t even have a chance to catch his breath before that same hand that had caused so much pain wrapped around his cock, jerking him roughly.

Deku moaned, unabashed. He let himself get lost in the feelling of Master’s big, warm hand completely encasing his cock. He was so close, so desperate to ride out his orgasm while the tail ends of pain still lingered on his skin.

“Cum baby, Cum for me. Cum Izuku. Cum for your Kacchan.” Master blubbered in his ear, giving him the push he needed, hurling him deep into the area between reality and dreams. Every cell in his body felt alive and his cock spurted out globs of cum over Master’s hands. He didn’t stop either, not until he whined, high pitched and attempted to squirm away from the painful sensation.

Katsuki debated jerking his baby through another orgasm, but looking at the slumped frame of his lover made him hold off, he could hold off on overstimulating him for another day. Perhaps paired with edging him for hours while Izuku lay tied to their bed and helpless to Kastuki’s mercy. Fuck. He couldn't wait.

He slipped Izuku off his lap and onto the bed, careful of the irritated skin. He straddled the backs of Izuku’s legs and pulled his sweatpants down, freeing his cock, so strained and hard the tip was nearly purple.

Just as he had seconds ago with Izuku’s cock, Katsuki ran his hand up and down the much larger length, using Izuku’s cum to slick the way. Seeing the darkening splotches over his skin drew him in deeper and deeper. He remembered the beautiful sounds that spilled out of his baby’s lips, how beautiful he always looked and was soon spilling his own seed over the abused flesh.

Deku watched from over his shoulder as Master came all over his raw ass and thighs. For a moment he was diapointed Master wasn’t going to fuck him, but the stinging sensation of hot cum covering his skin changed his mind. He wouldn’t be able to handle Master’s body slapping against him right now.

The spurts of hot cum stung his skin, burning in their way. Katsuki took no time, rubbing his spent into the inflamed skin, desperate to mark his baby in every possible way. His chest was heaving, feeling the dulling rumbles of his Dom persona fading away. His baby, his wonderful, perfect, baby looked back at him with sleepy eyes.

He shoved his pants off the rest of the way, and tossed them behind. He leaned over, giving a sound kiss on those plump lips he would never grow tired of. Deku hummed into the kiss, barely moving.

“I love you so fucking much.” His poor baby was too tired to respond in any way, not that Katsuki blamed him. “How are you feeling?” He whispered, keeping his voice soft as he carded his hands through the fluffy curls.

“Mmmmm…”

“Come on, I need words.” He poked at the chubby cheek of his love, earning a glare. It was so cute how Deku tried to be intimidating. He was nothing more than an angry kitten in this state. Too fucked out to do much but grumble.

“Amazing… Relaxed….Sleepy. Sore… Cold?” Deku finally said. He shifted, noticing the cooling sweat covering his body. Soon the sheets he lay on would become cold and tacky, making him more uncomfortable.

“I’m glad. Are you going to be okay if I step away for a minute?” Deku nodded, letting his eyes slip shut. Assured that his love was fine, Katsuki moved with purpose through their apartment. He gathered a cold water bottle, warm wet rags, and a bottle of soothing lotion they saved for this exact purpose.

He returned to Deku, dozing happily. With as much caution as he could manage, Katsuki cleaned the two of them up from the sweat and cum. Deku whined at the feeling of the course washcloth on his burning skin, but the refreshing feeling left behind was worth the mild discomfort. Soon the adrenalin would subside and the real soreness would set in. Kacchan hadn't been kidding when he said he was going to make it so Deku would have to take breaks the next day.

Katsuki smoothed the lotion over Deku’s body, not just the areas he battered. He wanted to pamper his baby. All the while he whispered praises into his skin.

“I love you so much.”

“You did so well for me.”

“You amaze me.”

“I’m lost without you.”

“You are the most important thing in my life.”

Deku hummed and sighed, too tired to do much of anything else. But he knew Kacchan knew he felt the same. He would scream it from the rooftops, after a quick nap. As soon as Kacchan was done tending to his wounds, Deku pulled him down to lay with him, snuggling close and wrapping his arms and legs around his boyfriend.

Katsuki allowed himself to be taken cuddle hostage, pleased to be wrapped in the warmth and comfort of his love. They needed to change the sheets, and he needed to make Deku drink some water, maybe eat something as well. But for now, he was content to bask in the afterglow with the love of his life.

X

The next day while on patrol, Katsuki’s phone will not stop buzzing. Picture after picture from his boyfriend flooded in, making the slow and boring patrol much more enjoyable.

“Made myself a milktea! Look how cute the boba are!”

“It’s sooooo nice out! I’m going to take a looooooong walk.”

“KACCHAN!!! LOOK AT THIS DOGGIE!!! CAN WE GET ONE PLEEEEEAS?!?!?!”

“Yummy Sushi! #treatyoself”

It was all pretty standard, up until the last text Katsuki got, right before he left the agency.

Deku stood facing away from the mirror in their bathroom, steam covering the majority of the mirror. Deku had that evil glint in his eye, a smile too sugary sweet to be anything other than trouble, with a clear picture of Deku’s beautiful bubble butt and thighs. The milky skin absolutely covered in a rainbow of bruises, some of Katsuki’s clear handprints visible. Katsuki nearly dropped his phone upon opening the image, drooling like the heart-throbbing teenager Deku skill made him feel like.

The picture was sent with a simple caption, “Ow 😘”

x

News companies and gossip blogs alike spent weeks questioning and debating why Pro Hero Dynamight was seen blasting off the roof of his agency with such ferocity two days in a row. What could possibly be so important for him to leave so rapidly?