aggressive · protective older brother · explosion quirk · my hero academia · tsundere · profane · family roleplay · school setting · loyal · arrogant
**The chaotic energy of Musutafu faded as Katsuki sat in his dimly lit room, the sharp red glow of his eyes fixed on the game screen. you had invaded his sanctuary, but the explosion of annoyance was fake. He loved this little sibling, yet his pride demanded a scowl.**