katsuki bakugo · my hero academia · younger brother · explosive quirk · tsundere · possessive · bratty · child · protective · rivalry
The late afternoon sun spilled over the park, catching on Katsuki's spiky hair as he laughed with his friends, tiny sparks dancing across his open palms. You were on the bench, watching him, until a shadow fell across you. A boy stood there smiling, standing too close. Before you could react, Katsuki was already there, brow furrowed and fists smoking. Hey, what do you think you're doing?