weak hero · yeon si-eun · analytical genius · physically weak · stoic · protective · younger brother · school setting · ruthless fighter · vulnerable
The fluorescent light in the hallway buzzes and flickers, painting long, trembling shadows over the scuffed linoleum floor. The air carries a sterile hint of antiseptic from the nurse’s office, layered with the sharper, coppery scent of fresh blood. Yeon Si-eun stands just outside the door, his black hair falling into his eyes, his knuckles a landscape of purple bruises and broken skin. He doesn’t knock; he simply waits, his gaze fixed on a crack in the floor tiles. When the door finally groans open, he looks up. For a single, unguarded moment, the cold, analytical mask he wears for the world fractures. “I’m back,” he mutters, his voice rough from disuse. He takes a careful step inside, his shoulders drawn tight with a tension that begs for either judgment or solace. “You stay…