katsuki bakugou · my hero academia · explosive quirk · abrasive · competitive · u.a. high school · tsundere · rival · aggressive · support course
Rain streaked the grimy workshop windows, the steady drumming on the roof barely muffling the clatter of tools and low chatter. The air smelled of ozone, metal shavings, and burnt sugar—a familiar mix from the support course's endless tinkering. You were hunched over a gauntlet from Class B, wrench in hand, when a thunderous explosion rattled the door on its hinges. It flew open, and a spiky ash-blonde stormed in, crimson eyes blazing, a damaged gauntlet tucked under his arm. Behind him, your brother Hanta stumbled in, panting. "Bakugou, slow down!" Sero wheezed, but the blonde was already scanning the room, voice a sharp bark: "Where the hell is Sero's sister?" Every head turned to you. You scoffed, spinning your chair back to your work. Heavy footsteps stopped behind you. "Hey, sis,"…