#rock lock

Dear Ken Takagi,

There are no words to express how much I LOVE you. I hope you don’t die. I wish you got more time on screen than you did.

From Rae

Ns/fw under cut

How could I forget Rock Lock & Mirko!?

i won’t lie to you.. writing this one was a little hard. i’m used to writing for my mains; But Rock Lock? i have never written for him before. so when i got this and i was like fuck yeah. so.. here’s what i could do :)

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🔐Click, Lock, Obey -

Rock Lock x Reader x Keiko

Content Warning: MDNI (18+) — Dom!Reader | Cuckolding | Chastity | Degradation | Voyeurism | Morally Gray Manipulation | Dubcon-Style Control

Rock Lock x M!Reader x Keiko - use of masc anatomical terms

Reader has a hypnosis quirk he knows how to use well

⸻

You always liked heroes who thought they couldn’t be broken.

And Ken Takagi—Rock Lock—had been one of the proudest. Unshakable, cautious, loyal to his wife and the law. He didn’t trust easy. But you didn’t need him to trust you. You just needed him to hear you.

Your voice was your Quirk. Soft. Layered. Sliding under skin like silk and catching like barbed wire. And once someone heard the right phrasing, the right hum beneath your words? Their choices became… flexible.

You’d met Keiko first. A stunning, sweet thing, curious but restless. And somewhere in your fourth “accidental” meeting at her favorite café, she asked if you knew her husband.

“Oh,” you’d smiled, already humming the low vibration of your Quirk into your throat, just enough to make her pupils relax, “Ken and I go way back.”

Not true. But by the end of that coffee, it felt true enough to her.

It only took a few “friendly” dinners to blur the lines. You’d drop words like relax, loyal, open-minded, and let the Quirk do its work while Keiko giggled under her breath and Ken narrowed his eyes at you.

He hated how easy you were. How confident. He hated how his wife laughed a little louder when you were around.

He hated how your words stayed in his head after you left.

⸻

Tonight is the night.

Ken is sitting on the bed, naked. Naked. Shoulders tense, jaw tight, arms gripping his thighs like they’re the only thing keeping him from leaving.

And between his legs? A sleek, metal chastity cage.

You made him lock it on himself. With Keiko watching. With you whispering calmly, “Go on, it’ll prove how much you trust her. How much control you really have.”

Click.

That little lock made a sound in the room that made Keiko shiver.

Now she’s kneeling between your legs. Not her husband’s. Not tonight.

You’re fully hard in her hand, leaking, heavy, her tongue trailing the underside of your cock like she’s been waiting for this.

“You sure you’re okay, Ken?” you murmur casually, fingers combing into Keiko’s hair while her lips slide over your tip. “You’re free to leave. Or stay. You chose this.”

His throat flexes. “I—… yeah.” His voice cracks a little. “I chose it.”

You grin, not because he sounds strong—but because you can still hear your own words echoing in his mind.

Real strength is knowing when to surrender.

Trust means letting her explore.

Control is letting go.

Let go.

Keiko moans softly as she sinks her mouth all the way down your shaft. Her fingers dig into your thighs, her husband watching, chest heaving, the cage tight over his cock as it twitches helplessly.

You don’t even have to tell him to keep his hands behind his back. He does it on his own.

“You’re being such a good boy,” you murmur, eyes locked on Ken as Keiko gags gently around you. “You always said you’d do anything to make her happy. And now… look at her.”

He’s looking. Of course he is. You’ve made sure his eyes can’t look away.

You grab her by the hair, thrust once, deep, and she moans louder, one hand slipping between her own legs now, working herself as she bobs harder.

“She’s never been this loud for you, huh?”

He flinches.

You laugh. Not cruel—amused. Gentle.

“It’s okay, Ken. You’re providing. That’s what good husbands do.”

Another moan. Another thrust. Your words keep rolling like silk and steel:

“You give her the house, and I give her what she needs.”

She whimpers when you pull her off your cock. You grip her chin, wipe her mouth, press a kiss to her cheek.

“You wanna ride?” you ask her softly.

She nods too fast.

You don’t even look at Ken when you guide her into your lap, her pussy soaking and desperate, already grinding herself against you before you even slide in.

But you do hear his breath catch.

When you bottom out inside her—slow, wet, deep—her mouth drops open and she cries out, arms wrapping around your shoulders.

And Ken?

He moans.

Low.

Quiet.

Like it hurts to let the sound out.

“Fuck,” you groan, hands gripping Keiko’s hips as you start to thrust up into her. “She’s so fucking tight—god—do you hear that?”

The wet slap of her cunt as she bounces in your lap fills the room. The cage clicks against Ken’s thighs every time his hips twitch. He can’t stop it. He’s leaking. Helpless. Face flushed.

“You’re doing so well,” you tell him. “Keeping that little cock locked up like a good husband. Maybe next time she’ll sit on your face while I fuck her.”

Keiko sobs your name as she cums. You keep thrusting.

You don’t let her stop until she cums again.

And again.

And again.

And when you finally spill inside her, cock deep, heat flooding her cunt—you make sure Ken’s watching her face as she moans.

Of course you take care of her once she’s done, reduced to nothing but a shaking mess in your lap.

You lay Keiko down, kiss her thighs, clean her up with your mouth until she’s giggling from sensitivity. She falls asleep on your chest, spent and glowing.

And Rock Lock?

Still caged.

Still watching.