Hoozuki Kanae, the head of Kagari Ayaka's fan club that protects her from "bad bugs," and Hio Touko, a part-time waitress at a café, have been Ayaka's classmates since middle school.

Delirious with fever after signing the contract with the town, Takamiya strays into a space between dimensions known as "the cycle of recollection." There, he sees the memories of Kazane, the former contractor, including images of himself and Kagari when they were younger.