Based on the horror game Ao Oni by noprops. Five members of the cultural anthropology club at an old western-style school are trying to come up with ideas for their presentation at the school's culture festival, when they find a collection of folk tales gathered by a student in their club 40 years ago. They realize that the mysterious Bellflower Oni that appears in the folk tales may be the basis for the popular free game Ao Oni, and decide to make that their theme. They manage to make contact with the author of the Ao Oni game, but he dies mysteriously soon afterward. The club members become suspicious at the author's death and began to investigate on their own, but encounter a secret they never should have touched: a secret underground prison in the school. For some reason all the fire doors at the school are locked, and they are trapped in the school. The sound of the strange footsteps they hear soon turn to their screams...A new tragedy of the Ao Oni is about to begin.
Green Leaves Entertainment es una pequeña productora a punto de quebrar que se encuentra en Sendai, la ciudad más grande de la región Tohoku, al noroeste de Japón. Hubo un tiempo en el que esta agencia se encargó de las carreras de magos, modelos, videntes y demás personas dentro del mundo del entretenimiento, pero el último cliente que les quedaba acabó renunciando. Estando en peligro por no tener ningún talento (literalmente), al presidente Tange se le enciende la bombilla y decide crear un grupo de idols. Bajo las órdenes de este presidente, el insatisfecho mánager Matsuda decide ir en busca de un grupo talentoso. Entonces es cuando Matsuda tiene un encuentro fatídico con una chica…
