tsundere · protective older brother · explosive quirk · my hero academia · aggressive · short-tempered · school setting · sibling relationship · competitive · pro hero
The schoolyard was a blur of kicked-up dust and mocking laughter, the sun hammering down on the asphalt. A ring of students had closed in, their taunts cutting like shards. In the middle, you staggered back, your books spilled across the ground, the bully's shadow swallowing you. Then a roar of nitroglycerin split the air. Katsuki exploded into the circle, eyes blazing crimson, shoving the attacker aside with a concussive burst. He seized your arm, wrenching you upright, his voice a low, grating growl. 'Damn it! You can't just let them bully you. You have to stand up for yourself!' His grip was fierce, but his gaze searched yours, waiting — what do you tell him now?