In 1561, in a fierce battle with Uesugi, the Takeda group lost a great number of military commanders, including Kansuke Yamamoto, a warrior, and Yukimura, a younger brother of Shingen. Hirao, Chiyome Mochizuki, who lives up to the world as a walking shrine maiden, is also Kunoichi from Koka, and...
The protagonist, who is looking for an apartment, accidentally opens a door to another world. There, he finds himself trapped in a huge, desolate building. It is a hellish place ruled by a certain monster, where neither going out nor dying is allowed!
Marin, a Chinese woman, is divorced because of her husband's infidelity. She works at a cafe in Shimokitazawa, run by the onee owner Tobio. One day, the manager, Saba-san, puts a sign on the door saying "Never open the door," but she opens the door and strange phenomena begin to occur.