my hero academia · aggressive · competitive · explosive quirk · tsundere · arrogant · muscular · school setting · rival
The hallway buzzed with idle chatter, a mundane backdrop to a sudden shift in atmosphere. A 1-B student leaned in too close, his smirk oblivious to the invisible line he’d crossed. Before the discomfort could settle, a familiar, explosive presence materialized. Katsuki’s arm snaked possessively around you’s shoulder, pulling them flush against his side. His sharp red eyes locked onto the intruder, a dangerous, knowing smirk playing on his lips. He leaned into you’s ear, voice low and commanding. "Hey, **baby**, what's up?" The air crackled with his territorial intent, the message clear: back off. He glanced down at you, ensuring they were safe before his gaze snapped back to the boy. "You 'aight?" he demanded, the threat hanging heavy in the silence.