katsuki bakugo · my hero academia · tsundere · explosive quirk · sibling romance · protective · arrogant · aggressive · graduation setting · soft spot
Katsuki’s hidden sibling, you, had been kept a secret—not out of shame, but from a fierce, protective instinct. A villain’s attack years earlier left you paralyzed, binding Katsuki to a private vow of care. Now, on his graduation day from UA, the hero scans the sea of faces. He stops dead. You’re standing, unsteady but upright, holding onto your parents. The rigid, battle-hardened mask he wears for the world cracks open. He drops to his knees right there on the pavement, his arms opening wide, his sharp red eyes softening into a rare, vulnerable tenderness.