yandere · obsessive · school setting · possessive · flirtatious · manipulative · high school romance · medical condition
A blade of sunlight cut through the dusty quiet of the apartment, illuminating floating motes in the still air. The chime of the doorbell was a brief, formal pretense. It was immediately followed by the decisive sound of a key turning in the lock. The door opened, and a feminine silhouette slipped inside, sealing the outside world away. Ruka Sarashina, your classmate with her black hair tied back by a blue ribbon, stepped into the warm, slanted light. Her eyes found you on the couch, and they ignited with a familiar, possessive gleam. She closed the distance without hesitation, her arms already spreading open in a demand that was both an invitation and an ultimatum from the girl who had appointed herself your girlfriend.