Thread by @Astra_waves

Okay, okay, just a little thing for @bnhapissweek! Day 3: Control #pissweek2022

CW: nsfw, #dkbk, teasing, stern Deku, semi-public, praise

Trust does not come easy to Katsuki. There are very few people he’s willing to put faith into, open himself to.

Relinquish control to.

Izuku knows this, and takes it as a great honor when Katsuki chooses /him/.

Sure, it’s great to say he can tame the allmighty beast known as Katsuki. But it’s the psychological dance they do that really turns him on.

“Deku.”

“No, not yet baby.”

They’re on a near-empty train, a bumpy ride across town to a musical. Izuku scrolls through his phone as normal, ignoring the fidgeting happening next to him. Katsuki makes a noise of discomfort before leaning his head on Izuku’s shoulder.

Izuju smirks before locking his phone and placing a kiss in Katsuki’s hair.

“We’re not even halfway there yet and you’re already squirming,” he murmurs. Katsuki lets out a sigh of frustration.

“If I had known the 4 water bottles were intentional, I would have gone earlier.”

The snarkiness is still alive and present in Katsuki’s voice, and Izuku knows he hasn’t pushed hard enough yet.

The dance of knowing that Katsuki is all bark with no bite, and if Izuku wants him to hold it, he would in a second.

It doesn’t mean he’ll give it up easily though.

Katsuki crosses his legs for the 5th time in 5 minutes and Izuku pulls his head away, looking down at the blond with a glint in his eye.

“Stop squirming. It’s barely been a hour since your last water bottle. I thought you were tougher than that but maybe I was wrong about—”

“I was just moving my legs,” Katsuki rushes out with pink cheeks. “I can handle anything you throw at me.”

This is what Izuku loves. Giving Katsuki the illusion that he has choice.

Of course it’s his body, and safe words are in place for a reason, but he can’t help but feel

victorious when he bends Katsuki in the right direction, pushing him more and more to his limit.

The ride is agonizing, and the 4 bottles of water are making themselves present, bladder aching. He moves his leg and his eyes widen when he feels a squirt land

in his boxers. He looks at Izuku with panic, only to be met with him scrolling through his phone. No reaction, nothing. Katsuki squeezes his legs together, hoping the second part of the ride goes by quicker than the first.

Izuku rests his hand on his back, stroking in soothing motions when he sees the beads of sweet on Katsuki’s forehead. He almost feels bad, watching the way Katsuki’s foot taps against the floor.

“De-Izuku, I need…”

Izuku looks at Katsuki, tipping his chin up with his finger and whispers:

“Baby, /I/ determine what you need. And right now, I say you need to be patient and wait until we get off the train.”

Katsuki opens his eyes (when had he closed them?) with a soft whimper,

squeezing his legs even further. The sloshing in his body is becoming unbearable and he starts to stand up to help with the pressure.

When he moves his arms underneath him though, Izuku sucks his teeth, looking at him with stern eyes.

“Did I say you could get up, Kacchan?”

Katsuki sits back down, closing his eyes as he tries to focus on anything else. Anything but the rocking motions of the train, or the insistent pressure on his bladder, or the way Izuku is comfortingly rubbing the back of his neck, making him relax his muscles and —

Katsuki lets out a squeak, clenching his thighs. He hears a soft chuckle from the green-haired man.

“Good boy,” he says as he strokes the back of Katsuki’s neck.

By the time they get to the train station downtown, Katsuki’s body is broken down, straining to minimize the amount of leakage. He knows his boxers are fucked, but if he can save his pants he’ll consider it a win.

He stumbles off the train, Izuku calmly following behind.

When he spots the bathroom sign he staggers, a jolt in his side causing another steam to flow out. He barely manages to save it, crouching down to disguise it as if he’s tying his shoe.

Izuku looks at him from above, an amused smirk on his face.

“D-Deku, c’mon, this isn’t funny, I really have to go.”

“I know, honey, I can see it all over your face.” He coos, stroking Katsuki’s face as he stands up. Katsuki gives a sigh of relief, positioning his hands to cover the piss-colored stain in his pants.

“But did I say you could go?”

Katsuki pauses, relief turning into dread. Izuku slowly guides him to the family bathroom, locking the door behind them.

He leans against the wall, bored expression his face while Katsuki dances by the open toilet, hands pressed against himself.

Katsuki’s cock is throbbing, he’s nauseated and he just needs to take a /piss/. With a frustrated sigh, jumping on one foot to another, he grits his teeth.

“Izuku, please.”

Izuku’s face lifts, mirth dancing in his eyes. He’s almost there.

“Please /what/, Kacchan?”

He’s playing with Katsuki, he knows it. But he can’t help but soak up every bit of fun while it’s available. He watches Katsuki actively swallow his pride, before his eyes go wide again, quietly whispering “no, no, no.”

The toilet was right /there/.

“/Please/, Zuku!” He’s panicking now, breath becoming more anxious by the second. “I just need to piss, please let me go, please just say I can go!” Tears in his eyes and piss in his pants, Katsuki begs him.

Izuku’s got him.

“Okay, honey,” he coos before walking over to him.

“That was mean, wasn’t it? I’m sorry, Kacchan.” He undoes Katsuki’s fly, emerald eyes meeting crimson, before giving him a sweet peck on the lips. He moves Katsuki over to face the toilet before pulling his cock out, dribbles of piss landing in his hand.

“Let go, baby.”

The stream of piss is explosive, ricocheting against the toilet bowl and landing with a splash. Katsuki’s half-hard cock actively relaxes as he releases a sigh of relief. Izuku’s other hand strokes Katsuki’s back through the whole stream, all 2 minutes of it.

They wait for it to become a dribble, and Katsuki leans forward to shake out the remainder before letting out one final breath. His chest is pounding, heart pulsing and lungs working hard. His bladder still aches, tender to the touch, but is empty and no longer a bother.

Katsuki leans his forehead onto Izuku’s shoulder with a sigh of relief, and Izuku pulls him close. He doesn’t miss the hard cock twitching in Izuku’s pants, and his own starts to stir to life. Izuku presses a kiss to his temple.

“Good boy, you were so good, waited so long.”

Katsuki soaks in the praise, almost purring at the sweet words.

“Followed every direction to a ‘t’, I love you, Katsuki,” Izuku says into Katsuki’s ear.

It’s quiet for a moment and Izuku eventually pulls away, straightening himself out. Katsuki is mildly confused,

normally Izuku loves to stretch out their aftercare. Until he looks down and sees the suit attire he’s wearing.

Then he looks down at his own, now ruined, suit. Fuck.

“Looks like we can’t go to the show after all, not like this,” Izuku says with a sneaky smile.

“Might as well call it a night, I think we can think of some other ways to occupy our time.”

He’s riled up, he knows it. But watching Katsuki become so fidgety to so pliant with the snap of his fingers is just—

Katsuki nods, agreeing with him wholeheartedly.

“Yeah,” he says eyeing Izuku’s increasingly growing cock through his pants, the twitching becoming more persistent. “we got better plans.”

Fuck it, his pants are already ruined anyways.

That’s it for this one! Thanks for reading my unedited piss related thoughts!

Might see another thing or two like this soon 👀

See you next time 🥰