Katsuki looks /destroyed/.

His glasses are tilted on his forehead and covered in sweat. His lips are swollen as all fuck. Spit and tears are smeared all over his tomato red face, and his breathing is rough, giving away the state of his fucked raw throat
And his mouth...

Kirishima dick give a valiant twitch as he watches the spit and cum gleaming on his braces. He looks like some kind of school boy porn star.

He desperately wishes that he could take a picture, but knows he would get murdered, especially as an almost stranger.
Baby steps.

Like reciprocating the amazing blowjob he had just been given.

"That was great," he groans, pulling his underwear and pants into their proper places and doing up his buttons. "Not exactly the best as you claimed, but definitely worth the time spent."
Katsuki grunts, a touch of anger in the sound that Kirishima would bet money on having been an explosion of yelling had he not just dicked his throat into disuse.

"Now, let me show you how it's done."

Katsuki had only one second to be confused before his pants were yanked down.
"OI!"

Kirishima was already between his knees, using his shoulders to spread his legs open so that he can see his dick properly.

"Oh, you're so /cute/ here," he coos, purposely letting his warm breath wash over pale inner thighs just to feel him shiver.

"A-ah, wait-!"
He breaks off with a high pitched cry as Kirishima licks just to the side of his crotch, along the innermost crease that becomes the v-line of his hips.

"Taste good, too," he purrs, looking up coyly into panicked red eyes.
"Kirishima-!"

He doesn't let him protest for long before doing it again, licking slowly back down until he meets an inner thigh that he can bite gently.

Katsuki arches into the air with a wail, his legs already shaking wildly.

"Ah!"
Kirishima moans back at him, sucking a light hickey into the pale skin there that should only last long enough for him to admire in the mirror should he choose to before moving on, dragging his nose across a surprisingly well groomed set of testicles.
"Well, you're just perfect everywhere, aren't you?" He asks right before sucking both of the small orbs into his mouth.

Katsuki jerks with a wordless shout, his eyes rolling into the back his his head a heat unlike anything he's ever felt wraps around him.
It feels like he's gonna melt at any second.

"K-Kirishimaaa," he whines loudly, small fingers tangling into red hair and yanking roughly as his hips buck up. "P-please-!"

Said male hums loudly, and Katsuki chokes as the vibrations send lightning shooting down his spine.
"Fuck!"

Kirishima pulls away with a slurp and a low laugh. "Such language..."

Katsuki doesn't even hear him, both of his hands now pulling at his hair, trying to guide him to where he needs him most.

"Please," he gasps softly, his eyes sparkling with a fresh sheen of tears.
And like, he may have this reputation of being a 'bad boy', but he's not a fucking monster, okay?

"Get my shirt and put it under your head," he mumbles, licking softly at his wrinkled balls until he does what he said before swallowing all of his dick in one eager gulp.
He's not /small/ per se, just...dainty.

Average sized.

Perfect for Kirishima and his large, warm mouth and wet, licking tongue that drags up and down his dick with each bob of his head.

Katsuki has actually gone speechless this time.
He'd frozen the second Kirishima had swallowed him down and stayed that way while his mouth worked him over, but he could tell that he was into it.

Could hear his sharp gasps as he struggled to breathe and feel his legs shaking violently where they were wrapped around his head.
Overwhelmed by the kind of pleasure that a simple mouth was giving him.

A few more harsh sucks and a dry finger pressing against the hole hidden between his cheeks brings him alive with a yell, his hips pressing up forcefully as he empties all of himself down Kirishima's throat.
He just barely manages to hold him down with one hand on his hip and the other gripping his ass as the smaller man bucks wildly, sobbing as pleasure rocks his body straight to its core, before leaving him wrung out where he's spread across the roof top.
And then it's just a matter of pulling off and getting him redressed as he twitches through the aftershocks, which he does just in time for the bell to ring.

"Damn, we went a little overboard," he hums, pulling a pack of wet wipes out of his pocket to use in his face.
It feels weird, and it /definitely/ won't fully erase the smell of sweaty ball sack that he's sure has seeped into his skin, but it's nice to know the man cares.

Kirishima grabs one of his notebooks and a pen, scribbling across a random page before dropping it and standing.
"Let me know if you need someone to take control again," he says over his shoulder with a smirk and a wave.

'Not fucking likely,' Katsuki scoffs in his head as he continues to lay against the concrete.

Fuck class.

✨👀✨
It takes a good two and a half weeks, but one day, Kirishima comes out of the shower to a text message on his phone.

(From_Unknown Number:
This Kirishima?)

He smirks, typing a few things into his phone before replying back.

(To_đź’–Pretty Boyđź’–:
Hello Katsuki.)

✨~THE END~✨
(Everyone who read this thread owes me tree fiddy.

I'm kidding, but if you WANT to give, feel free, and if not, then I'm glad you enjoyed anyways đź’–đź’–đź’– as always I love you guys and thank you for always hyping up my horny 2 a.m. ideas MWAH!!!) http://ko-fi.com/maneatingmomma 
(Also sorry this isn't my best work it is 6 a.m. and I have half a burnt braincell slsgdskjsk)
Katsuki's mouth was like:
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