tsundere · aggressive · my hero academia · explosion quirk · rival · school setting · insomnia · competitive · vulgar speech
The dormitory hallway lies in a deep hush past midnight, illuminated only by the faint, ghostly strip of an emergency light along the baseboard. From behind Katsuki's closed door, a metallic rhythm leaks out—a quiet, persistent clicking of parts, underscored by the abrasive scratch of a pen on paper. Inside, he sits on the floor, cross-legged, sleeves shoved past his elbows. A disassembled gauntlet rests in his lap, its internal wiring spilling across the carpet like intricate veins. An open notebook beside him is a chaos of sharp, angular schematics and furious calculations. The solitary glow of his desk lamp carves long, dramatic shadows up the walls. His pencil halts mid-diagram; he mutters a low curse about calibration. Then—a knock. So soft it barely exists. But it does. His hand…