a/n: i love sensei izu and pro hero katsuki sm
thereโs a single knock on the classroom door before katsuki is entering. izukuโs eyes widen and the students gasp as they take in katsuki in his hero uniform. izuku stands up from his desk and pushes katsuki out into the hall and clicks the door shut behind them.
โwhat are you doing here?โ izuku hisses, breath catching in his throat as katsuki pushes him back against the wall.
โcanโt visit my favorite sensei?โ katsuki tugs on izukuโs tie.
โyou- you can.โ his cheeks heat. โbut you should tell me first.โ
โwhyโs that?โ katsuki leans down, inching closer.
โkacchan someone could see.โ he presses his hands to his chest.
โand what are they gonna say?โ katsukiโs mouth centimeters from izukuโs.
โone kiss, then i have to get back to my class.โ izukuโs practically panting now.
thatโs all it takes for katsuki to be pressing his lips against izukuโs. itโs searing and all consuming. izuku pulls back for a breath but katsuki follows him and captures his lips again, snaking an arm around his waist and pulling him closer.
โkacchan we- mmph!โ katsuki kisses down his neck. โweโre in the hallway.โ he pants.
โlunch is soon, right?โ katsuki chuckles against his warm skin, sucking a small mark just under his collar.
โyes!โ izukuโs fingers dig into katsukiโs arms.
โthen iโll wait with you and watch you teach.โ katsuki pulls away. โcโmon sensei, before these kids get any weird ideas.โ he leaves izuku pressed against the wall while he opens the classroom and walks in.
izuku smooths his shirt and straightens his tie, nodding his head before walking back into the classroom. katsuki is at the front of the class showing the students the different things he can do with the little sparks he can create without making an outright explosion. izuku watches him with a soft smile from the doorway until katsuki turns his attention to him.
โyou guys know this nerd is the best teacher you could ask for right?โ
the kids start giggling and izukuโs eyes go wide. โkatsuki enough.โ izuku steps into the classroom. โgo sit at the back so i can finish my lesson.โ
โyes sensei.โ katsuki smirks and makes his way to an empty desk in the back.
izuku tries his hardest to focus on the lesson but his eyes keep drifting to katsuki lounging in the back of his classroom. katsuki keeps chiming in and every time izuku immediately stumbles over his words, letting out a little huff. the bell finally rings and izuku dismisses his students with a sigh of relief and clicks the door shut behind the last one.
โyou couldโve at- mmf!โ
katsuki smashes his lips to izukuโs and pulls him flush against his chest. izuku melts into katsuki, gasping into his mouth when katsuki lifts him and carries him to his desk. he sets him back on the wood and kisses down his neck again.
โkats- kacchan..โ his head lulls back.
โlook so fucking good in this suit.โ katsuki shakes his head.
katsukiโs hands squeeze against izukuโs sides, sliding lower until heโs unbuckling his belt. he slips his hand past the waist band, wrapping his slender fingers around izukuโs cock. izuku grips onto katsukiโs shoulders as he slowly starts to stroke him.
โplease.โ izukuโs hips jerk up.
โshhh.โ katsuki leans back and looks at his flushed cheeks. โdonโt want anyone to hear.โ his grin widens.
he pumps him faster, thumb swiping over his leaking tip, leaning forward and swallowing down all of his sounds. izuku is gasping into katsukiโs mouth, fingers buried in his hair, trying to pull him closer. katsuki tightens his grip and izuku lets out a low moan.
โkats, canโt make a mess.โ he shakes his head. โgotta teach class after.โ he ends with a whine.
โshould i use my mouth, sensei?โ another glob of pre leaks out at katsukiโs hushed words. โgonna have to be quiet, izu.โ
before izuku can process his words katsuki is lowering down, lifting up his shirt and pressing small kisses across his lower stomach as he slowly strokes him. he tugs his pants a little lower and traces his tongue around the tip making izuku bite on his knuckles to keep himself quiet.
katsuki slowly wraps his lips around izuku, sinking down, humming softly as he takes him to the back of his throat. izuku knows he wonโt last, the setting, the warmth of katsukiโs mouth, his hero suit, all of it just too much. one of his hands is buried into katsukiโs hair still, the other clawing at the wood of his desk.
โkacchan- hic! iโm gonna.. gonna nghh!โ his hand flies to his mouth as he starts to coat katsukiโs throat.
katsuki keeps sucking until izuku is pulling him off with a firm grip. he looks up at izuku as he licks his lips, helping him back into his pants. he leans up and takes izukuโs lips again, fingers adjusting his pants before cupping his cheeks.
โso handsome.โ katsuki murmurs.
โare you.. are you done with work for the day?โ izuku blinks up at him.
โyeah.โ katsuki brushes izukuโs hair back.
โso.. youโre gonna be home tonight?โ he traces a hand down katsukiโs chest.
โcareful.. lunch isnโt that long.โ katsuki chuckles, grabbing izukuโs wrist. โbut yes, iโll be at home waiting for you.โ he presses his lips to his. โsensei.โ he chuckles at izukuโs low groan.