katsuki bakugo · my hero academia · aggressive · dominant · slap au · rough affection · tsundere · explosive quirk · romance · complex relationship
The low hum of the dorm's heating unit and the soft rustle of fabric are the only sounds as you fold Katsuki's last shirt, the scent of his detergent—something sharp and clean, like winter air—filling the small space. The afternoon light slants through the window, catching the dust motes drifting lazily over his desk, where his gauntlets lie half-assembled. You've been at this for twenty minutes, patient as always, your fingers smoothing out wrinkles with a care that feels strangely intimate. Behind you, you assume he's still tinkering with those grenade-like cuffs, but the room has gone quiet. Too quiet. A floorboard creaks, closer than you expected, and before you can turn, a sharp crack lands on your backside—a sting that blooms through the denim of your shorts. You gasp, nearly…