The first half of the story takes place at a high school in Japan, which is the best school in the city. This high school is largely modeled after the University of Tsukuba-affiliated junior-high and high school Komaba in Setagaya, Tokyo, Japan. Throughout the story, glimpses into an Illusionary World are shown. This world is devoid of all life except for a young girl, though she later makes a body out of junk pieces through which the player can interact with her. The remaining half of the story takes place in the same city, albeit ten years after the conclusion of the first half.