Chapter Text
Katsuki should really start to see shit like this coming by now, but Izuku’s always had a way of leaving him utterly shellshocked even in the most mundane moments.
They have the same night off from patrol for the first time in weeks, so they spend a cozy night in at Izuku’s apartment. As a result, Katsuki finds himself watching some vintage, unbelievably corny pro hero movie.
The outrageous villain has the hero—someone so obscure that Katsuki doesn’t recognize him, but Izuku obviously does—bound to a chair in an abandoned warehouse. The hero had a teleportation quirk, but apparently he’d forgotten to use it when up against some basic fucking rope, of all things. Needless to say, the plot was not all there. The special effects weren’t half bad, given how outdated it was. Still, Katsuki wasn’t impressed, not by a long shot. But it’s not like he had any other plans this evening. In fact, it's already one of the most relaxing nights they’ve had in a long time.
The villain on screen lets out a nefarious cackle; Katsuki does a poor job of suppressing a full-body cringe. Suddenly, the villain grabs the hero’s chin and jerks his face upwards, forcing their gazes to meet.
You won’t win, villain scum! I’ll make sure of it.
Oh? And what are you going to do to stop me?
I—
The hero’s reply falls short with a choked-off noise while his eyes go wide in shock. The camera pans to the villain, slowly zooming in on his now-glowing eyes. The hero’s jaw falls slack as he gazes deeper, completely lost in the villain’s thrall.
A mind control quirk, obviously. Katsuki grimaces at the sight, immediately reminded of Shinsou’s smug purple eyes that scream dead inside and here to make it everyone’s problem! He feels Izuku tense where he’s curled up at Katsuki’s side. The nerd lets out a soft gasp, clearly sucked into the (predictable) plot like the easily impressed fanboy he’d always been. As the scene continues, Katsuki vaguely wonders if they have any more beer in the fridge. He gets up to go check.
He can hear the hero mindlessly obeying orders from the kitchen, and by the time he sits back down on the couch with two cold beers in hand, another pro hero has already burst through the warehouse wall, knocked out the controlled hero, and was now engaging in battle with the (honestly, useless) villain. Katsuki can admit that the fight choreography wasn’t half bad, though.
“Can’t believe somethin’ like this never hit theaters,” he murmurs sarcastically as he hands one of the bottles to Izuku. He drapes his other arm around Izuku’s waist, tugging him closer.
“Kacchan, be nice. The filmmakers put a lot of hard work into this,” Izuku chastises, never once looking away from the screen as he accepts the drink and snuggles closer.
Katsuki takes a long swig. “Couldn’t have been that much work...”
Izuku lets out an exasperated huff. “Well, it’s the only movie in existence with Pro Hero Invisus.”
“C’mon! The guy went down way too easily for a pro.”
“It was a mind control quirk, Kacchan! He couldn’t have seen it coming!”
“Should’ve been a non-issue in the first place with a fuckin’ teleportation quirk,” Katsuki shrugs, jostling Izuku slightly. “Only thing whatever that shit did,” he gestures at the screen, “was cause some weird sexual tension for no reason.”
Izuku’s head whips up to his eye level so quickly that Katsuki genuinely jumps.
“You thought so too?!”
“… Haah?”
“I-It… That it was…” Izuku trails off, suddenly looking embarrassed.
Katsuki raises an eyebrow.
“I-I don’t know!” Izuku squeaks, covering his reddening cheeks with his hands. Katsuki watches Izuku grow increasingly flustered and skittish as he speaks. “Hot? I guess?”
“Nerd,” Katsuki demands, now suspicious.
“W-what?”
“What’re you gettin’ at?”
“Nothing!”
“No. Say what you mean.”
“It’s…” Izuku pauses, wincing. “I-I just think it would feel nice. You know. To let go. Like… that?”
“You think,” Katsuki enunciates slowly, as if tasting the words on his tongue. “That it’s hot to be forced under someone’s control?”
Izuku’s expression drops into a flat stare. “I mean, you already knew that…”
Yes, Katsuki did know that. Most of their sexual explorations over the last two and a half years together revolved around Katsuki enthusiastically catering to Izuku’s insatiable submissive and masochistic tendencies.
“Sure, but this is different,” Katsuki nods, keeping his face stern. “Very different.”
“Not really!” Izuku pouts. “It’s not like being forced, it’s more like… seduced into it, or something.”
“It’s non-con.”
“It can be consensual non-con, thank you very much. Well, not in the movies. But, like, you know…”
“Whatever, fine.” Katsuki grumbles. “So, is it a… thing?”
“A thing?”
Katsuki slides a hand down his face. “Is it a porn category, Izuku?”
“Wuhhh– I-I don’t know! I mean statistically, in theory, a-anything could be–”
“Y’know your browser history’ll tell me the truth if you don’t,” Katsuki threatens, completely deadpan.
“Fine! Yes. It is. Mind control, sure. That’s the fantasy, but that’s not— It’s more like hypnosis in practice but—” Izuku meets the blonde’s blank stare. “No. Shut up. Don’t look at me like that.”
Katsuki studies his boyfriend with a serious expression. “You’re into this, huh?”
A beat of silence passes.
Izuku shrugs in lieu of a response; his face is so red that it nearly eclipses his freckles.
Katsuki drapes his arm over the back of the couch and curls his hand around the back of Izuku’s neck, a comforting and possessive gesture.
“Noted.”
Izuku’s eyes widen. “Yeah?”
Katsuki nods and turns his attention back to the screen ahead of them, wrapping his arm leisurely around Izuku’s shoulders and pulling him close once again.
“Mhm.”
***
Katsuki is nothing if not thorough, especially when it comes to Izuku’s never-ending laundry list of kinks. In fact, he’s spent his relationship with the dweeb a little unsure as to whether Izuku’s libido is a blessing or if this is some kind of (unbelievably kinky) penance for his previous sins. Nevertheless, it’s not like he’s about to back down from a challenge.
It’s been three weeks since Izuku dropped that latest bombshell on him: three weeks of late nights and lunch breaks spent scrolling through strange little blogs and forums in even stranger corners of the internet. There are still too many unknowns and variables for his liking, and a lot that he can’t seem to wrap his head around, but it’s a start.
It's a few nights later when he decides that there’s no time like the present. They’re standing in the kitchen of Katsuki’s apartment, listening to an upbeat rock playlist as they cook together. Katsuki can’t help himself—there was something comical and so downright wholesome about negotiating a CNC scene while doing meal prep.
“So, that fun little kink of yours...”
Izuku tenses. His back is to Katsuki, but it’s clear that he’s set the knife down on the cutting board, leaving the vegetables half-chopped in front of him.
Katsuki snorts.
“Chill, dumbass. I just wanna ask some questions.”
“Do we have to do this?” Izuku whines, already completely flustered. He turns around anyway.
“I mean… No. We don’t have to.” He shrugs. “Figured you’d wanna at least give it a shot at some point, though.”
Izuku sighs and slowly sits up on the countertop beside the cutting board. His bright yellow and blue boxers almost disappear under the edge of his baggy t-shirt. He pointedly stares down at the spot between his feet and the floor below.
“What do you want to know…?” he asks quietly.
“Ever done it with a partner?”
It was a reasonable place to start. They were hitting their late twenties, but they’d only been together for just under three years now. Before then, Katsuki had slept with a handful of guys since high school, but never pursued anything serious. Izuku, on the other hand, had attempted a few short-lived relationships with people of varying genders. Katsuki can’t imagine any of the people Izuku had slept with as being exceptionally kinky, but who knows?
There is, however, one degenerate they’d both managed to sleep with—on separate occasions, of course—but Katsuki really doesn’t want to pry into that particular chapter of Izuku’s history. In fact, he’d prefer to bleach that mental image right out of his head, if possible.
“No, never,” Izuku mumbles. “Never even asked.”
A mix of pride and relief settles low in Katsuki’s stomach.
“How much research have you done on this?”
Izuku huffs. “Too much. Probably too young.”
“Heh, lil’ freak.”
“Hey!”
“Figured as much, though. You know what you’re lookin’ for then.”
It isn’t a question.
“I-I guess? It’s not like I’ve ever gotten to try it in practice.”
Katsuki puts down the tongs he’s been holding and crosses his arms.
“Cool. So, tell me what you want me to do.”
“Mm,” Izuku nods, absolutely mortified. “Not without copious amounts of alcohol in me.”
“Absolutely not.”
“But it’s dorky!”
Katsuki rolls his eyes. “Isn’t every kink kinda dorky?”
“What’s dorky about being a dom and a sado-masochist?!” Izuku exclaims, throwing his hands up in defeat and nearly losing his balance.
“Probably the amount of research I’ve done on it,” he shrugs.
“Now that’s just admirable.”
Katsuki barks out a laugh.
“Literally only to you, fuckin’ nerd.”
Izuku lets out a shaky laugh, too. He almost lets himself feel relief at the sight, but then Izuku groans and cradles his face in his hands. Katsuki decides to give the interrogation a break—he slowly crosses the kitchen, stands between Izuku’s parted legs, and gently pulls his hands away from his face. He keeps a hold on Izuku’s wrists as their eyes meet. Izuku’s gaze is nervous, Katsuki’s unwavering.
“And now I’ve looked into it too,” Katsuki explains gruffly, “so there’s nothin’ you can say that’s gonna weird me out or anything.”
“You’re sure?” Izuku whispers.
“Yeah, why not?”
It was time to put some of his own dorky-ass research to the test, anyway.
“Look. Why don’t we just try?” he continues, letting his voice slip into a slightly deeper timbre. “Do some experimenting, keep it light, nothing too dominating or downright non-con…”
Katsuki releases Izuku’s wrists in favour of his freckled thighs. He runs his rough palms along them, up the sides, and back down. Izuku’s eyes never leave his.
“Let’s just see if I can get you feeling all good and mindless like you’ve been craving for so long, hm?”
Izuku sucks in a ragged gasp.
“Oh.”
His eyelashes flutter for a moment. Then he nods and falls completely silent, waiting for Katsuki’s next words.
Perfect.
“Mm. Good. I like the sound of that,” Katsuki basically purrs. Then he gives a playful smack to Izuku’s hip, breaking the spell. “Dinner first.”
Izuku slowly lowers himself from the countertop. Katsuki returns to his spot at the stove.
“Yes, Kacchan.”
The dominating little monster inside Katsuki fucking preens.
***
“So, what kinda induction styles do you like?”
“Oh my g— how do you know this stuff?!”
They’re sitting on Katsuki’s couch a short while later. Two mugs of steaming tea rest on the coffee table ahead of them.
“Told ya I did my homework. But this is gonna depend on what you want, specifically.”
“Kacchan’s so good to me,” Izuku teases, blushing slightly.
“Heh, damn right I am.”
Katsuki crosses his legs atop the couch and faces Izuku fully.
“So? What’s your poison, nerd?”
Izuku mirrors his position. He takes a deep breath and looks somewhere over Katsuki’s shoulder as he speaks.
“I think any kind of eye fixation would be effective. Doesn’t have to be as corny as a spiral or a pocket watch or anything like that. Just getting me to focus my attention on anything, really. Uh, also your voice, I guess? That sounds obvious but I think that’s like… most of the appeal. At least for me.”
“You like my voice, huh?” Katsuki teases, letting his tone go gravelly.
“Too much. Asshole,” Izuku mutters, still avoiding eye contact.
Katsuki takes hold of Izuku’s hands. “You know you’re gonna have to relax for this to work, yeah?”
“Obviously, but…”
“Then let’s start there.” He begins to massage Izuku’s palms. Slowly, softly. “Is that how you wanna feel right now? Relaxed?”
Izuku nods nervously. “Yeah, that sounds nice.”
“Good. Then that’s all this needs to be, baby. I want you to feel relaxed. You know I don’t judge you. That you’re safe.”
Izuku sighs and eventually lets his hands relax in Katsuki’s grasp.
“Mhm. I know.”
If Katsuki has learned one thing in his online deep dives, it’s that inducing trance is all about suggestion. If Izuku is willing, then all Katsuki has to do is guide him into whatever headspace he wants to be in. That, at least, he already has some experience with.
“Good. Then all you gotta do is follow my lead, yeah? Just like any other scene we do.”
“And… And you’re sure that you’re comfortable doing this?” He’s watching their joined hands, not meeting Katsuki’s gaze.
Confidence is key here, and Katsuki decides that he’s going to fake it ‘til he fucking makes it. Or until the nerd comes… or something.
“You know that I don’t do shit I don’t wanna do.”
Izuku sighs. “Okay.”
“You ready?”
“… Yes.”
Okay. Hold his attention. Guess I can do that…
He takes note of how Izuku still hasn’t looked away from their hands. If that’s how he’s most comfortable, then Katsuki is going to cater to that and use it to his advantage.
He begins tracing his thumb along one of Izuku’s palms. Then he does the same with his index finger. Then all of his fingers in turn, almost in a wave-like motion. Izuku’s other hand rests on his lap.
Use your voice... Right. Okay.
“All you gotta do right now is watch what I’m doing. It’s easy to just focus on your hand. On the feeling of my fingers.”
Katsuki has a vague idea of what he should be saying, but it’s not like he has a full script planned out or anything. He decides to just keep talking and see what Izuku responds to best in the moment, then go from there.
“Notice how your breathing is starting to slow down as you relax even further into this feeling.” His voice becomes lower, almost soothing. “You can let that happen if you want. Just letting your breaths come slower, deeper…”
He takes his time caressing the lines of Izuku’s palm, then each finger, circling his wrist, and brushing over his knuckles. Then he repeats. Sure enough, Izuku seems to be following his suggestions with very little hesitation. His eyes track every movement of Katsuki’s fingers: up, down, circling around, back up. Eventually, the rise and fall of his chest slowly evens out, and some of the tension starts to drain from his shoulders.
Katsuki barely pays attention to what he’s saying anymore, intent on keeping Izuku’s focus firmly on him. He suggests that it feels good to be so relaxed, to focus. To let everything else fade away. He’s honestly not sure how long they stay like that, but he lets them luxuriate in the moment. Just another thing Izuku doesn’t need to worry about while Katsuki is in control.
Whatever he’s up to is clearly capturing Izuku’s attention, but he wants to see if he can get him to slip into a full-on trance. It’s kind of the point of this whole experiment, after all. Problem is, he’s not really sure what to expect when (or if) Izuku enters that state. He decides that it’s worth a shot, even if it doesn’t end up working.
After watching too many induction videos for inspiration over the past few weeks, this is the only part he’d actually planned out in his head. Now he’s too curious not to try it.
Katsuki takes hold of his hand and slowly raises it until he can press a kiss into Izuku’s palm.
“Look at me.”
Izuku’s wide gaze slides from Katsuki’s mouth up to his eyes. He doesn’t even blink.
“You can let go for me now, baby. Relax completely and just…”
He lets go of Izuku’s hand; it falls limply on his lap.
“Drop.”
Izuku’s shoulders slowly slump forward, and his eyes flutter closed. He goes completely still.
Katsuki sucks in a sharp breath, torn between feeling: (a) pretty fucking proud of himself for how well that worked, and (b) confused as to what the hell he’s supposed to do now.
All they’d agreed upon for this trial run was to have Izuku focus on him and relax. But if he’s supposed to be holding Izuku’s attention, it’s probably not all that useful for his eyes to stay closed, right? So, he keeps it simple and runs with that idea.
“It’s so easy to keep relaxing and letting your body respond to my words, isn’t it?”
No response.
“You can just listen to my voice. You don’t need to pay attention to how your body sits up straight. Sinking even deeper as you sit back up for me.”
Izuku does just that. His shoulders sluggishly roll back. His chin tilts up until he’s back at eye level with Katsuki—or, he would be, if his eyes weren’t still closed.
“And the more you relax, the easier it is to let your eyes drift open. Staying so deep, even deeper… Opening your eyes now.”
Katsuki has to reign in his shock when he sees Izuku’s expression. His green gaze is half-lidded and glassy. Every muscle in his face is visibly relaxed, and his jaw is slack enough to let his mouth fall open, just barely. A glaze of unfallen drool clings to his parted lips. Katsuki doesn’t lick it off, no matter how badly he wants to—he’s afraid that if he touches him, it’ll snap him out of this state.
Instead, he raises a hand and slowly moves it in front of Izuku’s eyes, back and forth. His eyes lazily track the new movement, blinking heavily as he does. When he drops his hand, Izuku’s eyes find Katsuki’s once more. Then he just waits, completely still.
Oh, fuck yeah.
A dark chuckle fights its way up Katsuki’s throat, but he manages to suppress it until it’s nothing but a stuttered exhale. He takes a moment to bask in the heady satisfaction. The docile, downright vacant look in Izuku’s eyes goes straight to Katsuki’s cock for reasons he’ll worry about unpacking later. For now, he revels in the control he has over the strong, gorgeous man in front of him.
“That’s it, just my eyes now. Just sitting up straight and listening. You don’t need to think. Completely blank for me.”
Izuku’s gaze goes even glassier. His pupils blow wide.
“Good boy,” Katsuki growls.
Izuku shivers, then he goes still once again. And that’s all it takes for the dominant side of Katsuki to really take over.
“That’s it. So perfect when you listen like this. It feels good, doesn’t it?”
Izuku nods, the movement barely noticeable.
“Tell me. Wanna hear you say it.”
After knowing each other almost their entire lives, the voice that leaves Izuku is unlike anything Katsuki’s ever heard from him before.
“Feels… ssso good.”
His voice comes out in a dreamy monotone, like a slurred-out sigh. He sounds fucked out of his mind and basically all Katsuki did was touch his hand.
“That’s right. Keep feeling so good for me…”
Katsuki is now well past half hard, not to mention his voice is completely wrecked—in part from the arousal, but also because this is probably the most he’s ever spoken in one sitting—but he needs to put an end to this before they go beyond what they’d negotiated. He’s the one in control here, and Izuku is putting all his trust in him right now. He takes a deep breath.
“You’re doing great, baby. M’gonna bring you back up now, okay?”
“Okay,” Izuku whispers dreamily. His eyes almost flutter closed.
“You’re gonna slowly come back to yourself with each number, until I reach one. When I do, you’ll wake up out of this trance. Nice and calm, but completely awake. Do you understand?”
“Yes.”
His soft voice and instant obedience almost make Katsuki groan in pleasure. But he powers through it and starts a slow count down from ten, guiding Izuku to wakefulness with every number.
“… Two. All your thoughts coming back to you now, and… One. Completely awake.”
Katsuki watches in fascination as Izuku blinks slowly at first, then a few times in rapid succession. He sucks in a deep breath and slowly shakes his head, looking around the room in confusion, as if noticing his surroundings for the first time.
“So?” Katsuki presses quietly. “What d’ya think? Not too bad for a first try, huh?”
Izuku opens his mouth, then closes it.
“Hm? C’mon nerd. You gotta tell me what you’re thinkin’.”
“Tha—” Izuku’s voice comes out raspy, so he clears his throat. “That was…”
He finally meets Katsuki’s gaze. His eyes widen, and it’s only then that Katsuki notices that Izuku’s pupils are still completely blown out. His breath becomes laboured as the silence stretches on.
“I… I need…”
Izuku swiftly pushes Katsuki back against the couch, drops to the floor between his legs, and starts frantically fumbling with the drawstring of Katsuki’s sweatpants.
“Oi! Izuku, wha—”
“I need you. Please,” Izuku begs from his knees, staring up at him with lust-glazed eyes. “Please let me taste you.”
“Oh fuck,” Katsuki wheezes like he’s been punched in the chest. “Y-Yeah. Yeah, baby. Of course.”
Izuku laps at him from balls to tip, takes him down deep. He’s messy and moaning and completely enthralled by the reddened and pulsing dick in his hand, his mouth. His tongue lolls down and back up along the underside. Then he sucks at the bundle of nerves below the tip before taking him deep down to the back of his throat.
Katsuki is fucking floored.
To say that Izuku has an oral fixation is an understatement, but this was something else. He looks half in subspace already, just from sucking him off. Or maybe he didn’t actually come out of trance? Whatever the case, it was like something snapped inside of him and the nerd was finally going full throttle, just Plus-fuckin’-Ultra right on his dick.
Katsuki comes harder than expected, his palms nearly singeing the couch at the sight of the man sloppily worshipping him from below.
When he comes down from the electric high of his orgasm, he’s instantly slapped in the face with the reality of the moment. Izuku is still on his knees, eyes still fucked out, and panting through cum-smeared lips. Katsuki is no better off—the amount of cum and drool clinging to his sweatpants is drying rapidly, and he can barely catch his breath. The two mugs of tea are still on the coffee table, now completely cold.
Post-nut clarity spurs him to action.
He slowly helps Izuku to his feet, mindful of the circulation he probably lost while on his knees, and places him on the couch beside him. He cups his cheek in one hand and sets his other flat against Izuku’s chest. His heart is still racing.
“Kacchan,” Izuku sighs, nuzzling into the hand on his cheek. “Kacchan, Kacchan…”
“Shhh, baby. Breathe,” he coos, feeling a little desperate himself. “Come back to me… C’mon, Izuku.”
They stay like that for fuck knows how long.
“Mmm… Whoa,” Izuku says, finally verbal again. He lets out an amazed little laugh and Katsuki feels himself deflate with relief.
“Shit. Thought I lost ya for a second there.”
“Relax,” he mumbles drowsily, “your dick isn’t that good.”
Katsuki arches a brow, then proceeds to palm at the front of Izuku’s soaking wet boxers.
“Right…”
“Shut up,” Izuku laughs, looking pretty shocked himself.
“Felt good though, yeah?”
“Really, really good. Made me wanna…” he trails off. “That was more intense than I thought it would be.”
“No kidding.”
“And for you? Was it… Was that okay?”
Katsuki doesn’t have the mental capacity for self-reflection at the moment. Instead, he presses a searing kiss to Izuku’s temple, his jaw, his lips.
“That was hot as hell. Dunno why, but… Yeah.”
“Yeah,” Izuku sighs in relief, looking up at Katsuki with eyes full of fondness. “Thanks.”
Katsuki stands and holds out a hand to the disheveled mess that is Japan’s Symbol of Hope.
“C’mon. Shower then bed.”
It’s only once Izuku is fast asleep on Katsuki’s chest that he lets himself reflect on whatever the fuck just happened.
He knows that Izuku likes to feel overcome, submissive, and downright breedable in bed. But that level of enthusiasm and mindless desperation was completely new for him. In the simplest terms, Izuku seemed unleashed.
It makes Katsuki want to see what he’s really capable of.