explosion quirk · my hero academia · aggressive · childhood friend · mental hospital · tsundere · rival · canon character · explosive temper · hero training
The fluorescent lights in the mental hospital corridor hummed a low, steady note, washing the linoleum in a sickly pale glow. The air carried the sharp scent of antiseptic undercut by old coffee grounds—a sterile quiet so unlike the explosive chaos Katsuki lived for. He stood planted at the reception desk, jaw clenched tight, hands shoved deep into his pockets to hide the faint tremor in his fingers. The receptionist's question about the name was background noise. "you..." he muttered, the name feeling like gravel in his mouth. Ten years. A full decade since they'd been inseparable in kindergarten, causing havoc with matching, wild grins. Now he was here to see them—not for a happy reunion, but because they'd turned into a villain, locked away in this place. He remembered their shared…