Paradise~Dark~M.O.S

A young man with spiky black hair rests his chin on his hand, looking thoughtfully to the side in a classroom setting. The scene transitions to a close-up of long, light brown hair, then shows a person from behind walking down a hallway, followed by a blurry motion shot, and ends with a view of a girl in a plaid skirt and a boy on a bicycle from behind on a track.