Work Text:
Izuku was sat at the little coffee table in his and Katsuki’s living room, legs folded under him, a few sheets of paper and a couple pens on the table in front of him. He took a sip of tea and glanced at the clock on their wall—Kacchan would be home in five minutes. He pulled out his phone and looked at his notes app—he’d jotted down quick thoughts on his kinks and limits earlier in the day and wanted to refresh his memory before Katsuki got home. After their impulsive hookup the week prior, they’d decided that sitting down to actually talk about their kinks and limits would be helpful as they moved forward with their relationship.
The front door opened and Izuku’s head snapped up, a smile immediately filling his face. “Kacchan!”, he got a quick grunt in reply as Katsuki toed off his shoes and set his workout bag on the ground. “I made some tea if you want any—I thought it would be good to help our nerves. Not that we should be nervous! But just in case. I know that’s silly—” Katsuki sitting down on the other side of the coffee table with a huffed, “Quiet, shitty Deku”, had Izuku flushing brightly and nodding his head in apology.
“We’ve already fucked, Deku. There’s no shame here, okay? We’re talking sex so we can have even better sex next time. If something doesn’t click, that’s fine. Got it?” Katsuki’s voice was rough and hard, but Izuku could hear the care in the words—Katsuki wanted him to calm down so they could have an honest conversation about kinks so they could have more mind-blowing sex. He took a deep breath and nodded again, picking up his pen and straightening out the paper. This wasn’t going to be a BDSM contract, neither of them were prepared for something that serious, but making a list of their kinks and limits would be helpful to keep track of them moving forward, as well as informative since they had yet to really discuss their sex lives up to that point. With that in mind, Izuku quickly wrote Deku and Kacchan’s Kinks and Limits at the top of the first sheet.
“Alright, Kacchan, where should we start? Limits? Or kinks?” Katsuki gave a slight shrug and reached for his cup of tea. He was glad that Izuku had quickly gotten over his nervousness around this discussion and his goal was to keep Izuku open and talkative and not shut down due to shame or embarrassment—those emotions could have a role in their relationship, and if he was right about how their kinks would align they would have a heavy presence in their sex life, but they had no place here, in an open and honest discussion where the singular goal was to figure out how compatible their kinks were and to become aware of each other’s limits.
“How about we start with what we know from last week and go from there?”, Izuku nodded and wrote out Deku’s Kinks. “As you saw, I like pumping and I have a definite size kink,” Izuku paused for a moment to write those down and gauge Katsuki’s reactions, “the size thing—it includes stuff like fisting and double penetration or more—the most I’ve had is three. I like feeling small, being thrown around and stuff. Like, I want to feel like I’m not a guy with big muscles—not Hero Deku, just a small thing.” Izuku wrote this down as well and stared at Katuski’s face, happy that the only response was a slight nod and eyebrow raise. He hadn’t wanted to talk about taking three dicks at once, but it was important for this.
When Izuku didn’t immediately begin talking again, Katsuki cocked his head to the side. “There a story there you want to share?”
Izuku shook his head quickly, “no! I just, I thought you’d have questions? Or want to know who I’d been with?”
Katsuki straightened out his head with a shrug. “You can tell me if you want, but I don’t really care—I’d honestly assumed it’d been Four-Eyes, IcyHot, and some other extra.”
Izuku nodded and looked down at his paper. “That’s nice to know, that you don’t care—but I think I’ll feel better if you know, um, it was Shouto and Tenya, and Shinsou.”
Katsuki just nodded, “that tracks.”
When it became apparent Katsuki wasn’t going to saying anything else, Izuku took a deep breath and centered himself. “Submitting is really big for me, being able to follow orders and have someone else control what I do and when I do it—not having to think and being able to just turn my brain off.” Izuku noted that as well and then moved to the other side of the page, titling it Kacchan’s Kinks. “Your turn, please.” Katsuki nodded and took another drink.
“All of that sounds good to me—the pumping was hot as hell, and I’d love to fist your cunt. Inviting people over for double or triple penetration would be something I’d like to see, but I can be really possessive so that would need a lot of preparation. You’re your own person, of course, but if we want this thing to be exclusive we’ll need to talk about bringing other people in before we do it.” Katsuki tried for nonchalance, but the tension in his shoulders betrayed the fact that he didn’t want this possessiveness to be a deterrent for Izuku.
Izuku chuckled and wrote Katsuki’s words down, emphasizing the need for ample communication before anybody else could be introduced to their relationship, “I saw that one coming from a mile away.”
Katsuki rolled his eyes before continuing. “As for throwing you around, that’s easy. Turning you into a ragdoll sounds fun.” His grin was sharp and Izuku flushed at Katsuki’s choice of words—ragdoll? Really? He liked the sound of it and the implication that he could be moved so easily, but hearing the term aloud made a hot line zip down his spine. “I’m also really into domination—making you do shit when I want you to, how I want you to. Not just for the power trip, but because of how nice it is to have someone put their trust in me like that—it’s really heavy but good shit.” Izuku nodded and noted that. He’d assumed based on how easily Kacchan had taken control the last time that he was at least somewhat into domination, but hearing it confirmed was nice, especially since it sounded like Katsuki understood how important holding Izuku’s trust was in BDSM scenes.
“Something else I’m into is choking. I like using my hands the most because it gives me the most control over everything, but I’m also down to use my cock. I also like gagging—not me, but my partner. If you want to start a hard limits list, that’s one of them—I can’t be gagged or choked.” Izuku flushed at the memory of Katsuki’s hand ghosting over this throat but took the time to nod and acknowledge his vulnerability, making eye contact and smiling, before pulling out a different piece of paper and writing out Kacchan’s Limits, and designating choking/gagging as a hard limit.
“I also like choking with a hand, but cockwarming and deepthroating are also super good for me, and I like wearing gags when I need to relax—” Izuku took a second to write down his kinks and flushed before continuing, “I’ll sometimes put one on when filling out reports, which sounds bad and weird, but it helps me relax and then I don’t mumble, and—” Katsuki’s fingers gently pressed against Izuku’s right hand, making him release the pen.
“Izuku, you don’t need to justify anything to me—you like being gagged while you finish up work, that’s okay. You obviously don’t do it where anyone else can see you, so it’s fine. We can talk more later about how I can help with that, okay?” Izuku nodded and decided to move on.
“I really like marking—being able to see bruises and scratches afterwards, or, uh… what I had you do… cumming on me and rubbing it in? It makes me feel good—like I’m owned and good enough that someone wants me.” Izuku’s eyes had drifted back to the paper and he was solely looking at his writing.
Katsuki frowned slightly-- it was apparent by his stuttering that Izuku was insecure about this as well, so he offered up, “I like biting a lot, and I can forget how strong I am sometimes, so turning you black and blue isn’t a problem. I bet you’d look real pretty with some fingermarks on your hips.” His confident smirk was there, but the words themselves served more to reassure Izuku that if he wanted to be wrecked by Katsuki, then Katsuki would gladly destroy him.
He took a breath and continued, “you already know this, but I’m an ass, and that carries over—I like saying mean shit, getting my partner all red and embarrassed, a bit humiliated and ashamed.”
Izuku nodded, his core tightening at the memory of Katsuki calling him a cock sleeve, then shook his head before responding. “My limits for degradation are pretty much what I said last time—I can’t handle being called stupid or useless… and negative comments about my body, being ugly or gross, those are bad too.” His eyes were downcast as he made his notes, clearly trying to avoid any pity Katsuki may have had. He owned a mirror, so he knew that his body wasn’t attractive—yes he had muscle, so he looked good in his hero suit, but he was covered in scars, his fingers were crooked, and he had a solid muffin top that refused to go away. He made peace with his lack of conventional attractiveness years prior, but having it rubbed in his face was still uncomfortable and hurt.
“Izuku, look at me. I won’t ever say mean shit about your body—not just because it’s a limit, but because it isn’t true. You’re hotter than shit, Deku. We can table this for later as well, but I will get you to understand that.” Katsuki’s face was determined in a way Izuku rarely saw, so all he could manage was a slight nod. He didn’t believe Katsuki, but he’d let it pass for now.
“Besides that, I wanted to ask about those limits—are synonyms okay?” Katuski looked genuinely interested and invested in his answer, so Izuku took a moment to think.
“I’m not sure? Each time I was called stupid or useless in the past made me panic and after that my partners always stayed away from anything negative, even though I… I like being humiliated.”
Katsuki took a second to weigh his next words, “Can I try something out? Say some synonyms to see how you react? We can stop at any time, and if you don’t like it we can put it on the hard limit list and never even think of it again.”
Izuku thought a second—he was tempted to say no, that he didn’t want to try and explore synonyms for his limits, but as he sat on it, he realized that Kacchan was someone he trusted, and if Kacchan wanted to try this, he was going to trust that Kacchan wouldn’t hurt him more than he wanted to be hurt, more than he could handle. “Yeah—yeah, that’s fine.” His voice was shaky and quiet, but Katsuki heard it anyway. He painted on a smirk and waited a beat.
“You’re such a needy whore, aren’t you? So fucking desperate for my cock. God, you’re just a slut—a dumb slut.” Katsuki waited a moment, gauging Izuku’s reactions, eyes focused on Izuku’s face and breathing, his hands, trying to determine if these words were causing more stress and harm than they were intended to. When Izuku didn’t say anything, Katsuki continued. “You’re such a dumb whore, only made for one thing, only good for one thing—being a cock slut. A toy for me to use when I want. A brainless fuck doll.” Katsuki noted how Izuku’s breathing had picked up, and his hands had formed fists, normally signs of distress—but, his face was also flushed and his mouth had dropped the slightest bit open—he was helplessly turned on by being told that he was nothing more than a toy for Katsuki to use. “Yeah, the only thing you’re good for is being a fuck hole and making me cum—a dumb little hole for me to use until I’m done.” He waited a moment, reveling in the fact that Izuku looked about ready to suck Katsuki’s dick, like he’d beg for the honor—biting his full lips until they were a sweet shade of red, cheeks flushed and drool collecting at the corners of his mouth. “How did those sound? Good?”
Izuku nodded, “yeah—yeah those are good.” He took a second to breathe deep. He didn’t need to be helplessly turned on right now, what he needed was to be clear headed and able to finish hashing out their kinks. “What about honorifics or titles?”
Katsuki shrugged, “I like them as part of domination, but I’m not picky about which ones are used—sir, master, daddy, whatever.”
Izuku’s hand momentarily stopped writing—“you’re okay with being called daddy?”
Katsuki smiled—he’d had a feeling Deku would have a daddy kink. “Hell yeah. Love having a whiny baby boy crying on my cock screaming for his Daddy.” Izuku quickly nodded and tried not to think about how red his face must have been.
“I really like that too.” He waited a beat and then continued, “I like impact play. Spanking and flogging—being slapped around and stuff. Usually where it can’t be seen, but on long weekends having my face slapped is really nice. A limit with that is that I don’t like being punched—closed fist hits. It’s too close to how a villain would be fighting me. Anything open handed is fine, though.”
Katuski nodded, “I’m fine with all of that, and I’ve never been into actually punching my submissive—bending someone over my knee until their ass is red and bruised, though, I can do that all day.” Katsuki’s grin was back, but the way his eyes had sharpened let Izuku know that he had taken Izuku’s limit seriously and wouldn’t be forgetting it.
Izuku smiled and wrote that down too. So far all of their kinks and limits had lined up, and while he was happy about it, he was nervous that some of his more… out there kinks may turn Katsuki off. He took a breath and thought of a more conventional kink that should stay in line with what they had already discussed. “I know this isn’t a contract or anything, but I like being collared or just—having a collar. Being owned.”
Katsuki nodded. “If you want we can get you a new one, or we can use one if you already have it. I like the idea of having my mark on you like that—maybe something in my colors? Would you like that?” Izuku quickly nodded and made a mental note to send Katsuki a website he’d found that made quality custom collars.
“How do you feel about pet play?” The question made Izuku’s head lift, slightly tilted in question. He’d seen the term once or twice when he was doing his initial deep dive into BDSM and kink but had never looked further into it and none of his past partners had been interested in it.
“Can you explain more?”
Katsuki's head tilted slightly, like he was figuring out the best way to phrase things. “It can go along with the collar—kind of acting like an animal that’s owned. I think the most common animals are cats and dogs, but there’s others. They make accessories for it—ears and tails.”
Izuku thought for a second before speaking, “I’m not against it, I’ve just never done it before. Have you?”
Katsuki nodded, “yeah, Ei was into being a dog—puppy play-- had a food bowl and everything. Was a way for him to destress—go nonverbal for a bit and just lay at my feet and be a good boy.”
Izuku thought for a second and wrote it down as a kink he might be interested in. “I’ll have to think more about it, because I don’t think I’d fit being a dog or a cat, but I’m interested.” Katsuki shifted his teacup and took a breath.
“I—I have something but I don’t know how you’ll react and you’re free to absolutely shut it down, but I figured it’d be good to bring up.” Upon Izuku’s head nod, Katsuki continued, “I think breeding is really hot—I know we’re not anywhere near ready for kids and I don’t even know if you want to have kids or can have kids, but cumming in someone while they’re crying to be bred—I don’t know, it’s just hot.”
Izuku flushed and wrote it down. “That’s—that’s not bad, Kacchan. I’m on the best birth control available, all pros that can get pregnant are. I—I think I’d like it if you tried to breed me.” There was a moment of silence between them, and Izuku took a deep breath. “You don’t have to answer this question if you don’t want to, but I’ve just been thinking about it—you, you handled the uh, the trans sex thing really well. Asking me what to call things and how you could touch me, and I was just wondering, if, ya’ know, you’d done that before? Or like, sorry this is definitely prying, you don’t have to—”
Katsuki shook his head, “No, it makes sense, I was really competent and comfortable, and you have questions—I’ve hooked up with a few trans guys in the past, and I had the friends with benefits thing with Pikachu for a while.” Izuku quickly nodded, that made a lot of sense, and he really should have put those pieces together sooner-- Denki had always been open about being trans, and he knew that Katsuki had messed around with pretty much everyone in the Bakusquad at least once.
“Thank you for indulging me—umm on the topic of kinks again,” Katsuki nodded, accepting the shift back in topic as Izuku’s way of saying that he’d understood Katsuki’s answer and his curiosity had been sated, “… like you said, if you’re not into this it’s totally fine, but I really like being forced to do things—consensual nonconsent, like I tell you things I’m okay doing beforehand but in the moment I’m crying and saying no and trying to get away and you force me to do it. I know some people are really not into it and have really bad misconceptions about it, but it’s just about the control for me and--”
Katsuki quickly interjected. “You don’t have to justify anything, but,” he grinned, this was another kink that was right up his alley— “that’s all good with me—you want Daddy to hold you down and use you how he wants and only stop when he’s done? We’ll need a solid safeword system, but I’m down.” Izuku made note of Katsuki’s acceptance of his kink and steeled himself for the last two kinks he wanted to bring up today—of course he had more kinks, but he didn’t see this relationship ending anytime soon, so he had time to bring up more things later, and he could tell that he was approaching the end of his rope for the day.
“I’m just going to say the last two I have on my mind, and I know they’re kind of out there, but—umm, piss, like, pissing on my partner while I’m being fucked or being pissed on, and umm, I know you said I don’t need to justify anything, but pseudo-incest—like, step-brothers or something—I know they’re not common, but—yeah.” Katsuki took stock of Izuku: his eyes were screwed shut and he was tense, waiting for some kind of negative backlash, and Katsuki could only assume that one of his past partners had an overwhelmingly negative reaction to these kinks in particular.
“Deku, look at me”, he waited a long second for Izuku to open his eyes and establish eye contact, “you’re a kinky shit, but that’s all fine with me. If I can fuck someone that’s pretending to be my dog, I can fuck my baby brother while he pisses himself. I said it when we started okay, there’s nothing to be ashamed of. Even if I wasn’t into those, which I am—I am definitely into roleplaying and watersports—there’s nothing wrong with them and you don’t need to feel bad about them.”
He reached his hand across the table to run his fingers over Izuku’s knuckles, skimming up to rest over his lips, leaning partially over the table, “Now, tell me your safeword so Daddy can fuck you”.
Izuku shuddered and his eyes closed “I usually use the stoplight system”. Katsuki nodded and stuck two fingers into Izuku’s mouth, pressing down on his tongue.
“Good boy. Now—I’m going to clear this up. You go to my room. When I get there you should be undressed and ready to tell me if there’s anything you want me to do to you specifically.” Izuku nodded and whispered a “yes sir” as Katsuki removed his fingers.
Izuku quickly left the room and Katsuki took a second to look back over the lists before picking up the teacups and taking them to the sink to be washed later. When Katsuki walked into his room, he was greeted with the sight of a naked Izuku in the middle of his bed, one finger circling his dick.
“Izuku—did I say you could touch yourself?”
Izuku shook his head no. “Sorry Daddy, I just—you told me to think about what I want, and I want you to punish me.”
“Oh? Have you been a bad boy?”
Izuku quickly nodded. “Yes sir—I’ve been thinking about you and touching myself every night.” Katsuki hummed—he hadn’t realized that Izuku wanted him to own his cunt as well, but he was comfortable with that and added it to his mental list of Izuku’s kinks and set aside the fact that they would need to sit down again to clarify what the exact bounds of this “ownership” were.
“Yeah? You’ve been fucking your slutty cunt instead of coming to me? We can’t have that.” He pulled off his shirt and left his sweats on as he approached the bed, reaching out to grab Izuku’s ankle and pull him towards the edge of the mattress. “Should I spank your cunt? Teach it not to be so horny? That if it wants to cum it needs to wait for me?”
Izuku let out a long whine and nodded, “please, Daddy”.
Katsuki knelt on the bed, pulling Izuku’s legs apart before leaning down to blow on his dick before licking from his hole up to his dick, punching a gasp out of Izuku. “Now, you’re going to hold your legs open while I slap this cunt—if your legs close you’re going over my lap. Because I don’t know your limits, you will let me know the second you’re not green—Izuku look at me. If you push yourself beyond your limits I’ll be upset, but I will never be upset with you using your boundaries and letting me know them verbally. Understand?”
Izuku nodded, and when Katsuki quirked and eyebrow he quickly added, “yes sir—I’ll let you know if I’m not green anymore.” Katsuki nodded, leaning down to kiss the inside of each of Izuku’s thighs before sitting back up and carefully aiming two swats at the spot where Izuku’s thighs met his cunt on either side. He placed quirk-warmed palms over where he’d just hit before cupping Izuku’s cunt, then he moved to the side of Izuku so he could get a better angle, and Izuku readjusted his hold on his outer thighs to keep his legs open.
Katsuki spent a second staring and strategizing his hits before going in—he slapped directly on Izuku’s dick three times in quick succession, leaving Izuku to moan brokenly and helplessly buck into the air. Once Izuku had settled, Katsuki hit either side of Izuku’s cunt again before starting up a steady rhythm of hitting Izuku’s dick with only a few seconds between hits, enough time that if Izuku needed to safeword he could. At hit 15 Katsuki paused and set a warm palm over Izuku’s cunt, noting the way Izuku was taking in sharp breaths of air, eyes blurry with tears and cheeks bright red, legs shaking slightly with the effort of not closing. “Baby boy, color?”
Izuku took a second to answer, “Green, Daddy”, Katsuki nodded and kissed Izuku’s temple then swatted at his dick again, drawing another pained gasp from Izuku.
“Baby boy, who owns this cunt?” another hit. “Izuku, I expect you to answer me when I talk to you—who owns this cunt?” another hit.
“Yo—" a hit cut him off, “Daddy does!”, Katsuki paused for a second to look at the pretty shade of pink Izuku’s cunt had become and the way his dick was steadily pulsing now.
“And do you get to play with Daddy’s cunt just because you want to?” Izuku was quick to shake his head no, but didn’t verbally answer until Katsuki slapped his cunt twice.
“No sir! Daddy gets to tell me when to play with his cunt.” Katsuki nodded, rubbing the warm skin of Izuku’s cunt, narrowly avoiding his slick wet hole and his hard dick.
“Exactly. And have you learned your lesson? Or do I need to beat this cunt some more?” Katsuki was giving Izuku an easy way out without having to safeword—if he said he’d learned his lesson, his punishment would be over and they could move on to the next part of their play.
“Daddy—I—well, I can take more, but I, I mean—“, Katsuki gently bit Izuku’s shoulder, bringing him to a halt.
“Izuku, I’m not asking if you can take more—if you want to work on pushing limits later we can, but I just want to know if you’re done with this for tonight. I’ll beat your cunt whenever you want me to, we don’t have to keep doing it now if you don’t want to.” Izuku was quiet for a moment, moving his hands up and down his thighs.
“What does Daddy want? My limit isn’t for another while, we can keep going, but I’d also been hoping to do more tonight.”
Katsuki leaned forward to kiss Izuku’s cheek. “Thank you, baby. Daddy just wants to make you happy tonight, and now that your cunt is nice and warmed up and you’ve learned not to touch it without my permission, I want to do whatever else you want.”
Izuku nodded, “I want to ride Daddy while he calls me mean names, and I want Daddy to choke me and use me.”
Katsuki huffed out a laugh, moving back in front of Izuku. “Yeah, my baby boy want to be a dirty little cum dump? Just a toy for me to use?” Izuku quickly nodded, and Katsuki stood up to pull off his pants and underwear. Izuku shifted to move out of the way, but Katuski caught his ankle. “First, I’m going to eat that dirty cunt until you cum and then you can ride me. My dick isn’t going inside that horny hole until you’ve cum all over me. You don’t deserve me dick yet.” Izuku groaned and nodded as Katsuki laid down in front of him, warm hands holding his cunt open as he dove in, tongue fucking his hole in sure movements and moving up to pull his dick into his mouth in motions that had Izuku certain he’d be cumming embarrassingly fast.
“Dad—daddy, oh fuck please--”, teeth grazed his dick and Izuku tensed up, legs shaking as he was pushed over the edge, slick pouring out of his hole and being licked up.
“God you’re such a fucking slut, cumming so fucking quick just because I beat your dick some and licked your hole, and you didn’t even ask permission. I thought I owned your orgasms? That’s not very good, baby boy.” Izuku whined and threw his head back—he hadn’t even considered that he should ask to cum.
“I’m sorry Daddy, please don’t—” he was cut off his quick blows to his cunt, three in succession, with the third hitting his dick in the most delicious way and sending him into another back-arching orgasm, the tiniest bit of squirt escaping him.
“Holy shit—did that make you squirt? You’re so fucking sexy—” and Katsuki was diving back in, sucking at the new slick and biting at Izuku’s dick, determined to make him squirt again, pulling back every few seconds to bite his dick hard and suck it back into his mouth, a repetitive motion that had Izuku cumming for the third time in as many minutes, more squirt coming out with Katuski ready to catch it in his mouth now, holding it there before sitting up and kissing a still gasping Izuku, pushing the squirt into his mouth. “Good boys swallow what they’re given.” Izuku did as he was told as his muscles gave out.
“That was more than I expected to happen—if you don’t want to ride me anymore we can be done for today.”
Izuku picked his head up and shook it, “no, I’m fine, just, start fucking me now and in a few minutes I’ll be ready to go again”. Katsuki took stock of Izuku’s appearance, his flush skin and how his legs were almost imperceptibly shaking. Determining that he wasn’t lying, Katsuki lifted himself up so he could figure out how to best rearrange them.
“You want me to use you right? Turn you into my personal cocksleeve? Just a toy to get off with?” Izuku groaned and nodded his head at Katsuki’s words as Katsuki bent over to peck his forehead before grabbing his hips and dragging him over and pulling him up, swiftly situating himself underneath the still spent Izuku. Katsuki shifted Izuku up, moving him around with little care to his weight or comfort, ultimately using one hand to steady Izuku and the other to hold his dick still as he pulled a gasping Izuku down onto it, Izuku’s hands coming up to steady himself on Katsuki’s chest. Once Katsuki was firmly nestled into Izuku’s warm and still pulsating cunt, he eased his right hand up and over where they connected, using his thumb to brush over Izuku’s oversensitive dick, relishing in the sharp intake Izuku made at the contact.
“Izuku—if you can’t talk and you need to safeword you will tap me three times. Do you understand me?”
Izuku nodded quickly, trying his damndest to regulate his breathing, “yes Daddy”.
Katsuki nodded and harshly pinched Izuku’s dick between his right thumb and first finger, causing a loud shout of surprise and pain to be ripped out of Izuku. Before Izuku could recover, Katsuki slapped his right hip and then grabbed it and began harshly pulling Izuku up and down, using Izuku like his own personal fleshlight.
“Oh fuck—Daddy, Daddy it’s so much, fuck." Katsuki’s left hand moved up to push three fingers into Izuku’s mouth, moving deep enough that Izuku had to focus on not coughing on instinct, his breathing becoming more labored as he tried to suck in air around Katsuki’s hand as he was still pushed and pulled in whatever way Katsuki wanted.
“Good toys don’t talk, and you’re a good toy aren’t you?” Izuku moaned and tried to nod. “You’re not going to answer me? Hmm, and I thought you wanted to be my good boy.” Katsuki slightly sighed, and slowed down his pulling on Izuku’s body, loosening his hold on his left hip, removing his split-slick fingers from Izuku’s mouth.
“Sorry Daddy!” Immediately Katsuki’s right hand was wrapped around Izuku’s neck, applying light pressure, looking into Izuku’s eyes to make sure this was okay. When Izuku didn’t safeword, Katsuki applied more pressure and fully removed his left hand from Izuku’s hip.
“Fuck baby, I thought I told you good toys don’t talk. Guess I’ll have to help you with that, huh?” he tightened his hold once again and monitored the fluttering of Izuku’s eyelids and how his cunt tightened at the pressure, hips trying to move and mouth open in a silent moan. “And after I’ve had to do all the work so far? I thought my cocksleeve would be better than to just sit there and make me fuck him. I’m just wrong about everything today, aren’t I?” Katsuki tightened his hand once more, fully aware that Izuku was at the precipice of passing out, then fully released his neck and slapped his ass, his left hand going to Izuku’s head and pulling his curls roughly.
Izuku sputtered for a moment, his lungs burning and heart beating impossibly fast. The pain in his scalp was only slightly noticeable over the roaring in his ears and he used the pinpricks to ground himself, taking a moment before lifting himself the slightest amount and lowering himself again. The angle wasn’t the best for him, and his dick wasn’t receiving any stimulation, but the way Katsuki groaned spurred Izuku on—this was about being good for Katsuki. Being his toy. And toys didn’t need to cum, they didn’t need their dicks to be touched, all they needed was for their Daddies to feel good.
Katsuki’s hands had gravitated back to Izuku’s hips, just to rest there without assisting him in his motion. “Fuck yeah baby, I’m getting close—want me to breed your cunt? Fill you up all nice?” Izuku nodded and sped up his motions, gasping as he felt himself hurtling towards the edge of another orgasm despite the lack of contact on his dick. As Izuku’s movements began to falter, losing their rhythm, Katsuki’s right hand went to Izuku’s dick and quickly stoked it, pinching it every other stoke, and on the third pinch, when Katsuki’s nail dug just the slightest bit too harshly into Izuku’s skin, he snapped.
“Daddy!” Izuku’s cunt convulsed as he came again, his legs giving out and Katsuki taking over and fucking Izuku through his orgasm and speeding up until he came with a groan, hips stuttering and stilling as he forcefully pulled Izuku down one last time, his hot cum filling his cunt.
Izuku was floating, warm and satisfied, as Katsuki gently arranged them on the bed into a more comfortable position of laying down with Izuku laying firmly on top of Katsuki, his dick still nestled inside Izuku’s cunt. Katsuki knew that he needed to get up and get Izuku cleaned up, but for now he was content to lay and cuddle with Izuku, hold him while he slowly regained his senses. He pressed small kisses to Izuku’s forehead, slowly combing his fingers through messy curls.
“How ya’ feeling?” Katsuki’s voice was a low rumble and Izuku slightly shifted his head to kiss Katsuki’s chest.
“Good—‘m good. Thank you, Kac—Daddy”.
Katsuki chucked. “You don’t have to keep calling me Daddy, baby—not unless you want to.” Izuku hummed in acknowledgment, shifting himself a bit, ultimately dislodging Katsuki from inside of him, the cum and slick slowly oozing out.
“Izuku, you can rest for a bit, but we’re gonna talk about what we just did, okay? Make sure it was all good. How’s that sound?” Izuku nodded again.
“Sounds good, Daddy. C’n you…” Izuku trailed off, but he shook his head slightly under Katsuki’s head, prompting him to increase his combing to light scratching over Izuku’s scalp, ultimately causing Izuku to moan and nuzzle further into Katsuki’s chest.
Katsuki smiled and kissed Izuku’s forehead again, “whatever you want, Izuku—whatever you want.”