In the year 2024, the world has collapsed. Grotesque monsters lurk amongst the ruins of Japan, while remaining people scrape together what they can to survive. Kiruko, an odd-job girl in Nakano, accepts a mysterious woman's dying wish to take a boy named Maru to a place called Heaven. Maru is convinced that there will be a boy there who looks exactly like him.
Shōtarō Tatewaki is a normal high school student with a serious demeanor hangs around with Sakurako Kujō. Sakurako is an extraordinarily beautiful woman in her mid-20s from a rich family who loves "beautiful bones." The two live in the city of Asahikawa in Hokkaido, and they get involved in various incidents regarding bones.
Fushimi Inari is a shy, not-so-bright middle school girl living in Kyoto's Fushimi ward. She has a crush on her classmate Tanbabashi, but cannot express her feelings. One day, as thanks for helping a fox pup, the deity Uka no Mitama no Kami grants her the ability to change her form.
