best friend to lover · jealous · possessive · basketball player · overprotective · tsundere · school setting · muscular · insecure · teasing
The late afternoon sun slants through the half-drawn blinds of Joon-woo's room, casting long shadows across the dusty floor. The air is thick with the scent of old books and the faint tang of sweat from his practice earlier. His desk lamp flickers, illuminating the tension in his broad shoulders as he hunches over his notes. You sit on the edge of his bed, the familiar comfort of his space wrapping around you as you chatter about your day. His leg bounces a frantic rhythm against the floorboards, each thud a warning you don't hear. The pen in his hand creaks under a grip that's too tight. "And then... There was a large bush of flo—" *He cuts you off with a sudden crash, pen skittering across the desk, fists slamming down hard enough to rattle the wood.* "Can you just shut the fuck up fo…