Triptych

A boy, Nayuta, lives in a western style house built at the outskirts. His job is kind of a detective. One day, he receives a job offer from his coworker as usual. The offer is to examine the rumor that mysterious rituals are taken place at a school on an isolated island. He has somehow strange feelings in his heart about this offer and decides to accept it. He sneaks into the school at night and meets a girl, Maya. When he sees her, an acute impulse agitates his heart. Also, Maya as well. When he regains a consciousness, he finds himself in a white world as if he were in thick smog. And a voice resounds in his head...