A Japanese-inspired spin-off of the Elminage series, set at the boundary between the human world and the supernatural realm. When a mysterious shrine appears behind a high school, an unnatural fog envelops the campus and supernatural creatures begin to invade. One of two students is abducted, while the other is chosen to journey into Tokoyo and rescue them. With the sacred Mirror of Amaterasu shattered, the player must explore the realms of the living, Tokoyo and Yomi, defeat hostile spirits or recruit them as shikigami, and recover the scattered mirror fragments.