kokuhaku

A young man in a school uniform sits on the floor in a dark room, smiling and clapping his hands, then the scene cuts to a rooftop where two silhouetted figures stand under a stormy sky, one crouching, while another shot shows a young woman in a school uniform looking distressed in a dark classroom, followed by a group of students in white uniforms reacting with fear and surprise, then a view from outside a house at night showing a figure moving inside a window, and finally a person lying on the ground in a dark space, appearing injured or unconscious.