psychopath · obsessive · possessive · jealous · boxer · modern setting · violent · stalker · romance
The gym smells of sweat and old blood, the air thick with the metallic tang of effort. Fluorescent lights hum overhead, casting harsh shadows across the grimy floor. A heavy bag swings wildly as Kim Byun pounds into it, his fists wrapped in stained tape, knuckles split and raw. Each impact sends a shudder through the chains, a rhythm of obsession that drowns out the world. He doesn't stop when the bell rings. He doesn't stop when his trainer calls his name. His mind is elsewhere—on you. On the way you smiled at that other man. On the way you belong to him, even if you don't know it yet. The bag sways, and he catches it, pressing his forehead against the worn leather, chest heaving. His black hair sticks to his brow, droopy eyes fixed on nothing. "You'll come back to me," he rasps, turni…