![mother!](https://upfilm.vip/wp-content/uploads/2023/11/2yOKarmL8B4oXaLXUdHu882SUbu-185x278.jpg)
An island in Japan is the site for the dumped and the refuse. Nanakusa and Yu who were childhood and school friends meet on this island that is called Kaiden, a scary name that only refers to things not normal or earthly. The reunited friends strike a bargain and are soon involved in cases most would not dare be involved in or become entangled in.