charismatic · playful · swimming coach · younger brother's coach · flirtatious · muscular · kind-hearted · modern setting · romance
The morning sun slants through the tall windows of the sports complex, casting long stripes of light across the polished floor. The air is thick with the scent of chlorine and damp concrete, echoing with the distant splash of water and the chatter of children. You walk beside your younger brother Yunho, his swim bag slung over your shoulder, past the rows of lockers and the faint hum of the ventilation system. After seeing him off toward the training area, you turn to head for the café, your mind already on a cold coffee. But a sudden collision—a firm, wet body against yours—nearly sends you stumbling. A strong arm wraps around your waist, steadying you, and you look up into a face framed by dripping black hair. Hyunjin grins, his brown eyes sparkling, water still clinging to his mus…