Work Text:
Katsuki was taking a lunch break when his phone vibrated in his pocket. He usually liked to not look at his phone during meals, but as a hero no break was ever totally off duty. He dug the device from his pocket and flipped it in his hand to see the alert before half choking on his sandwich. Fucking Izuku.
It was a notification that their shared calendar had been updated, the new event for tomorrow night staring back at him from his phone screen.
Friday 7:00pm: Kacchan's spanking
ღゝ◡╹)ノ♡
His face was red before he had time to unlock the phone, scrambling over to Izuku's contact and tapping with too much force.
What the fuck is this.
He sent along a screenshot abandoning his lunch in search of answers.
Another buzz and there was a reply.
It's exactly what it looks like kacchan. I know you like having a plan so I'm letting you know mine <3
Katsuki looked around consciously to see if anyone was around to notice before burying himself in his phone.
and why the hell is that your plan!
I don't need a reason I'm the dom (◡‿◡✿)
Those fucking emotes he was going to strangle his boyfriend.
but really, you have been so good recently and i'm proud of you for that but it doesn't mean you stop having needs
Oh. Never mind, all thoughts of strangling were gone. In fact all thoughts of everything were gone, replaced by something good but a little overwhelming. Izuku must have sensed it because he was typing again without waiting for Katsuki's reply.
it's not exactly going to be a gentle good boy spanking, but it's not a punishment either. It's just discipline. It's about time you were settled kacchan
He doesn't feel settled right now. He feels like there is a rollercoaster inside his stomach. Anticipation, nerves, relief, affection, it was all rushing at him fast as he sat next to his half eaten sandwich. He was happy, but he felt a bit like crying.
This was the longest streak he had ever made without breaking a rule and Izuku had been praising the shit out of him. But for the last two weeks at least he hadn't been feeling quite right. It was almost pathetic that his dom had figured it out before he had but either way it wasn't like Katsuki was at the point where he would have been able to ask.
Kacchan? I need you to answer please
The buzz of his phone in his hand brought Katsuki back to reality. Communicate, right.
hi im here. im fine.
you're fine
yes
(,,-`_●-)
he couldn't help but laugh, Izuku drawing it out of him without knowing how strange it felt at the moment.
is that a fucking monocle
it's me seeing through your shit.
Touche.
I had a moment but its not a bad thing. I promise
Do you need to talk about it? Do you need to use a color?
No i'm good really.
okay we can talk more at home. Are you at lunch?
He looked up at his now kind of soggy looking sandwich, knowing exactly what was coming.
yes
finish please. Love you baby <3
It wasn't as mild a request as it seemed, especially after the conversation they had just had.
okay, love you too.
He put his phone back in his pocket and picked his sandwich up dutifully. Taking a bite he willed himself to feel normal again, pushing aside those big emotions until he had time to deal with them in a safe place with a safe person.
They had talked when they got home just like Izuku had said, but the conversation became much more about Katsuki's conflicting emotions when people did nice things for him than what the next night would actually entail. So at six pm on Friday he was still mostly in the dark.
That was fine. They wouldn't have gotten this far if he didn't trust his dom, but he did have a lot of anticipation building up because of the unknowns. If this was a correction for breaking a rule there would have been at least a hint of dread, but he had at least obtained a promise that this wouldn't be higher than a five on their scale.
Izuku had been home before him, dishing out food from take out containers onto plates and beckoning him to join him. They talked like normal. About their day, about the cute puppy Izuku had seen, about how badly he wanted to get one no matter how many times Katsuki assured him that they didn't have time right now.
Everything went on as normal, they even watched tv after dinner. Right up until Izuku's watch buzzed. "Oh it's seven, go sit on the bed and wait for me."
The order was accompanied by a pat on his thigh as Izuku untangled himself from where they had been pressed together on the couch. Katsuki went silently. Sitting up straight and still, not sure if there was something else he should be doing. If he was in trouble he would be in the corner, but it wasn't like that.
Instead he sat, biting his lip as he looked at the pictures on top of Izuku's dresser. There was one of them together on their graduation day, Izuku's arm thrown over his shoulder and Katsuki's crossed over each other as though he was mad about it.
He hadn't been. In truth he had been trying hard not to blush at the contact. If someone had told that kid that in six he would be waiting for Izuku to come 'settle' him with a spanking his mind might have exploded
"Okay hun let's do a little check in before we start." Izuku said as he closed the door behind him, coming to stand in front of Katsuki, petting down the side of his head. "Does anything hurt right now?"
It was a standard question for them. Their work often left scraps, bruises, soreness, and Katsuki was expected to tell Izuku about anything causing him pain regularly, but before they did this it was even more important to his dom to know.
"No"
"Okay how about inside? What are you feeling right now?"
Katsuki hesitated.
"Do you want me to go first?"
A nod. For some reason it was easier for him to do this part after Izuku had set an example.
"I'm feeling peaceful and excited. Both to try something new and because I think it will help you feel better. Your turn"
He leaned into Izuku's petting as he tried to find his voice. "I guess I'm... relieved because I agree with you that it's been too long. But I'm nervous because I don't know what to expect from 'maintenance''"
Izuku hummed, leaning down to kiss his forehead."Thank you for telling me how you feel. It's okay to be nervous and if you need to stop or take a break you know there is no judgment."
Katsuki nodded again, already feeling that honey like feeling pooling in his brain, slowing down his thoughts and easing his tension.
"Take off your pants but leave your underwear up for now and lay on the bed please." Izuku instructed, tugging off his own sweatshirt to leave him in just a t- shirt. It wasn’t something Katsuki had been expecting when they first started doing this, but both of them got a little too warm during a spanking and it was always better to adjust beforehand then have to stop in the middle to take off a sweater or turn on the fan.
Katsuki got through the first part of the instructions but paused. The bed? He only laid on the bed for longer range implements and that was certainly not a five on the scale.
"I'm not going over your knee?" He hated how disappointed he sounded.
Izuku must have picked up on it because he came closer again, taking his hand and guiding him as he sat down himself.
"You will later baby, but I wanted to start with something else."
As Izuku spoke Katsuki realized how he was being positioned on his back, redness flooding his cheeks as his dom hooked an arm under his knees and brought them up to his chest.
"Izukuuu." Ugh, he was whining now
"I didn't say this was going to be easy, Kacchan." Izuku said as he got settled, kneeling on the bed beside Katsuki to get leverage.
"You didn't say it was going to be fucking awful either!"
"No more swearing." Izuku interjected hand smoothing over Katsuki's stretched thigh. The stretch made every swat sting even more but that wasn't really the reason this position was so hard. "I want to see your face, Kacchan. No hiding."
That was what made it so hard. It was vulnerable, both physically and emotionally and Katsuki couldn't help but huff.
"Aw what a cute pout." Izuku cooed. In exactly the same moment his hand fell, smacking down against taught skin and not stopping.
It was slow, but it wasn't soft, a bright sting blossoming over his skin rapidly as izuku alternated sides, swatting down on his sit spots.He wanted to hide his face so badly as he gasped, feeling the shyness that always came with a spanking no matter what kind prickle over him. No covering his face, no moving his hands, he couldn't even wiggle in this position. All he could do was look at Izuku's face, calm and focused as he brought his hand down over and over again on Katsuki's warm and biting skin.
"That's right, sweetheart. Calm down. There is nothing you have to do but take your spanking like a good boy. Just focus on the feeling. Tell me about it."
He took a breath. Being good, that was something Katsuki enjoyed.
"It hurts."
"How does it hurt?"
"Ah-at first it stings" he panted. It was harder to keep the involuntary sounds from coming out when he was trying to speak. "Then it gets hot."
"Good job. You focus on that warm feeling. It's what you need, to have a nice warm little bottom."
At this point it should have been physically impossible for his face to feel as hot as his backside and thighs did, but somehow it was happening. Izuku's words were helping though. The embarrassment shifting to shyness that helped take him to a headspace that had him feeling... small.
"I definitely waited too long huh baby. I wish you could have a pretty pink bottom all the time. It suits you so well."
"'Zuku stop," Katsuki whispered. It was taking everything to not hide his face, to keep watching the practiced and steady motions of Izuku's arm as he smacked his hand down.
"Are you feeling shy? You don't need to feel shy about your perfect little bum. Or about how you are feeling or anything like that." Izuku paused for a moment, hand smoothing over Katsuki's skin, leaving prickles as it went. "I like every part of you Kacchan. Including this one. I actually really love this part and you should love it too."
He tried, he really tried. Most days he was satisfied with his submission, but this part was hard to deal with. It was easy to explain things like accountability and absolution of guilt to people. But it was harder to explain why he needed this. Why it helped him feel
settled.
His mind was already too gooey to linger there though and Izuku was leaning into him, placing a small peck on one cheek. "I love my little boy so much."
That was it. Katsuki was gone and he knew as his last threads of the mask he put on for the world fell away that he would be lost in little boy land (Izuku's words not his) for hours.
"Are you ready to go on with your spanking? I want to get this pink a little closer to red."
It was a little harder to answer now but Katsuki managed a nod and a 'mmm' sound closing his eyes to prepare. Instead of feeling another swat though, Katsuki was surprised when the hand that had been holding his legs up shifted, guiding them open.
In the second between Izuku positioning his legs in a frog like pose and Katsuki realizing what was coming the dom managed to land one well placed swat to the fleshy triangle of Katsuki's inner thigh before he snapped his legs shut with a cry.
"Kacchan" Izuku said in a warning tone.
"No, please. I don't wanna."
An eyebrow was raised as Izuku's cute lips pressed together, giving Katsuki a second to safeword out. He didn't.
"Who is in charge here, baby."
"You but-"
"Ah" Izuku interrupted, holding up his hand. "That's right, I'm in charge. My job is to give you exactly what you need right now–not what you want–what you need. And your job is to be my good boy and listen"
Another whimper and his legs were open. zuku settled himself between them, taking a second to push up the small amount of fabric of his trunk cut boxers that covered his inner thigh. Another slap, another whimper and now there was nothing obscuring his view as he watched his own skin bloom a pink splotch.
These swats were even slower. Careful and deadly. Katsuki thought ruefully that Izuku had been right, this was anything but a good boy spanking. But he hardly seemed to mind, even as he choked on a whimper that was becoming more like a cry.
This was a challenge in many ways. But it also felt so shockingly safe. He could face any challenge if he was with Izuku. It wasn't hard to sit back and let Izuku challenge him. There was something so relieving about it.
"There we go, there is my good boy. Maybe we should practice this more so you aren't so fussy when it's time to smack these sweet little spots."
There were no words left. Katsuki had run out as he got deeper into himself, more conveyed through sounds and tone than actual language.
In contrast Izuku seemed to talk more as he got deeper into his own headspace. Surmising, praising, scolding, soothing, it all flowed from him more readily as his dominant side took the foreground.
It just felt so natural to talk to Katsuki when he was like this.To talk his sub through his big feelings in these moments when he was feeling small, sometimes egging him on to get him to where Izuku thought he needed to be. Those whines and gasps, the way Katsuki's thighs trembled as he tried to be good and keep his legs apart.
When he was younger he might have felt a little bit guilty that he enjoyed Katsuki's struggle so much, but now he understood it better. If it was with the right person, with someone who wanted–needed–to be taken care of like this, it was far from a bad thing to enjoy it. Especially when that person was Katsuki, who had shaped Izuku's very understanding of what it meant to love someone.
He was getting sappy again. He always seemed to when he thought about Katsuki, but how could he help it when he was just so
proud
of him.
"That's it, You're doing so well." He praised as Katsuki reopened his legs after every flinch that followed a smack. "just a little bit more."
His hand came down faster, three swats to each thigh in secession pulling the saddest sound from Katsuki as he squeezed his eyes shut. It took some work on his part to guide Katsuki from laying on his back to being over Izuku's knee, but he was going along with it as best he could in his current headspace.
Little whines of protest came when his thighs brushed together and there was an adorably flustered gasp as Izuku pulled down his underwear. It shouldn't have been a surprise but when Katsuki was like this, this smaller version of himself, he didn't always think ahead or remember things, his thoughts slowed and his inhibitions lowered. That was okay, Izuku would remind him.
"It really has been too long if my little boy thinks he isn't going to get his bare bottom spanked." He responded to the sounds, letting his hand rest on Katsuki's hot skin while the other one pulled his waist closer.
"but...but"
There was no actual protest in those words.It was just Kacchan fussing. Not so long ago Izuku might have paused because of it, but now he knew better. In a sub space like this Katsuki's inner mind knew what he needed and what he needed was for Izuku to be bigger than him.
Bigger than his fears, bigger than his expectations for himself, bigger than guilt or shame or stress. He let Katsuki know that he didn't have to be in control all the time. It was ironic that his perfectionism could become so self destructive at times, but that was part of why Izuku had wanted to do this. To cut him off at the pass so to speak. From all he knew of Katsuki it was working as he started to settle down under his hand.
He started slow again, giving time for each swat to be felt fully, especially to the places higher on his subs bum that he hadn't been able to get to as well when he had been on his back. The whole surface was now a nice shade that crossed between pink to red with only the tiniest bumps of irritation.
Katsuki was panting slightly, lost in the sensations.
"Baby are you with me?"
"Mmmhhmmmm"
Okay not really a full answer.
"I need you to listen very carefully, okay? Answer with words please."
It took a moment for Katsuki to pull himself back to a place where language was an option but he did it, answering with a soft. "I'm listening 'Zuku"
He let his hand fall a few more times before stopping, resting it again on his sub's skin, letting the heat from his hand blend with the heat of Katsuki's backside.
"I want you to remember three things. They are very important for you. Can you do it?"
a determined little nod.
Izuku raised his hand again, letting it strike more softly, making his way carefully down every part of where he had turned Katsuki's skin red, reigniting it all for good measure as he spoke.
"First is that you are doing a good job. You work so hard and I'm proud of you everyday"
Katsuki's feet wiggled but Izuku ignored it. He often got overwhelmed by praise.
"Second is that it's okay to make mistakes. it's part of life and i'll always be here to help you through them when you need me."
Now Katsuki's breath stopped, stuck on an inhale.
"And the last thing, the most important one, is that I love you with all my heart."
The breath that Katsuki had been holding released with something close to a sob and Izuku knew they were done. He took care, pulling and pushing gently until he had Katsuki in his arms. He took hold of his chin, tilting his head up so that he could look at his face. The tears must have started silently before he had let out his little sob because there were already a few tracks starting to dry onto Katsuki's puffed cheeks.
Izuku cooed, pushing the fresh tears off with his thumb as he cupped Katsuki's cheek. chest tightening at the sniffling hitches in his baby's breath.
"Oh sweetheart it's okay." He said softly, pulling Katsuki down onto his chest as he laid back. "Let it out, that's right."
He had had a feeling Katsuki might need to cry. Though it usually took a lot more to get it out of him. Izuku had made it a pretty vulnerable spanking though, and then to end with so much positive reinforcement, sometimes that was a lot for Katsuki.
but that was okay. They were both more than okay, he thought as he placed a kiss to the crown on Katsuki's head, waiting for his tears to taper down. He kept murmuring encouragement, not wanting Katsuki to leave his subspace too soon, hoping he could keep him in this safe place a little longer.
Eventually the tears stopped and Izuku looked at his watch again. It was just past eight. That was good timing. An hour of aftercare that transitioned easily into cuddles and winding down for bed, then an early bedtime. Well, early for him at least.
“Kacchan, can you sit up for me?” He asked softly, nudging his boyfriend’s shoulder up a little to get him going. Katsuki sat, stiff and uncomfortable looking on his probably sore bottom. “I’m going to go get some things to make you more comfy, I’ll be right back.”
Red eyes softened out by the puffiness of crying looked up at him sadly as he scooted off the bed but he nodded anyway, letting Izuku move away. It would have been convenient to have a mini fridge in their bedroom, Izuku thought as he tried to gather things from the kitchen and then the bathroom quickly, not wanting to leave Katsuki alone for long.
He was on his way back when he heard a hoarse little call, barely loud enough to make it out to him. “Izuku”
He rushed, his armful of aftercare items tossed onto the bed so he could reach out for his lost little boy. Katsuki didn’t always get so out of it, but he seemed particularly helpless tonight and in all honesty it made Izuku feel warm and happy inside as his boyfriend’s hand fisted into his shirt.
“I’m back, don’t worry. And I got all the good things we need right here for you.” Izuku explained softly, picking up the soft damp towel he had gotten from the bathroom as he spoke. He took Katsuki’s head between his hands, one brushing back his bangs as the other ran the cloth gently across his forehead. Then he moved to his eyes and cheeks, careful not to rub too hard. He pressed a kiss to Katsuki’s lips after he finished wiping his face, a soft peck followed by one to his nose and one to each cheek. “There we go all clean!”
He was rewarded with the first smile he had seen from Katsuki all night and he couldn’t help but pepper more kisses across the bridge of his nose and cheeks, coveting the little airy giggle he got in return. “Come back over my lap now, I’m gonna put some cream on your bottom.”
Katsuki came easily, letting Izuku slide his underwear back down as he got comfortable. Izuku was happy with the after care cream he had bought. A special product that combined the low residue, deep penetration creams used by massage therapists with arnica to help prevent bruising, and finished with a warm vanilla scent, it was something he had done a lot of research to find and was happy to use often. In this case there was little need, Katsuki not even close to bruising, but it would feel good and that was ultimately what this was about.
“Kacchan, are you ready to talk, or do you need more quiet time?”
Katsuki’s head was still swimming a little bit, but he was coming out of his lost feeling as his dom’s hands started soothing the lotion into his sore thighs. “We can talk.”
Izuku liked to debrief soon after a scene if they were in the right mindset to do so and Katsuki agreed that sometimes it made it easier to be honest about his feelings if there were still the lingering edges of subspace.
“How do you feel that went, baby?” Izuku began, his scarred hands pressing gently into reddened skin, making Katsuki keen.
“It was kinda… Kinda a lot.”
“A lot, how so? Do you think you’re gonna be really sore? It doesn’t look like any marks.”
“No, not that.” interrupted. “It was just the positions… and the things you were saying. It wasn’t bad a lot, but… I guess I just didn’t know what to expect.”
Izuku made a thoughtful sound as finished with the cream and recovered Katsuki’s skin. He kept him over his lap though, comfortably pitched, rubbing down the length of his spine. “Okay would you like me to explain a little more of what I’m going to do next time?”
Katsuki shook his head. “No, I think part of the reason it worked so well was that I didn’t know. It made me feel…”
Helpless, small, cared for, it made him feel a lot of ways.
“Like I said it wasn’t a bad thing, it was just more than I was expecting.”
A strong arm was lifting Katsuki up, sitting him in between Izuku’s crossed legs. A bottle of water was held to his lips and the still fuzzy part of him drank with no desire to take hold to the bottle himself. “Okay, I’ll still keep it in mind for next time. Have some grapes.”
They were the perfect ones Katsuki noted as the bowl was passed from the night stand into his lap. Big cold green and crunchy grapes, the only kind worth eating. He plucked one off the stem with still unsure hands, popping it into his mouth and humming as he relaxed back against Izuku’s chest. Everytime he shifted he could feel his hot and sore backside, but it felt sort of good in a strange way, the reminder of Izuku’s words painted onto his skin.
“I was thinking, every other week. I wanted to do every week, but it’s just not feasible with our schedules. Now if you get in trouble we can revisit that but I think as of right now-
Katsuki listened as Izuku started rambling, it was important to his dom and he was listening, but ultimately he knew he trusted whatever decision Izuku came to. He was paying more attention to the beating of Izuku’s heart behind his head, to the way his fingers instinctively curled around Katsuki’s own as he reached out for his hand. The world felt peaceful for a moment, he felt truly settled.