Long time ago in ancient Japan, human beings could still see Yokai monsters and were afraid of them. However, as time passed and civilization and enlightenment progressed, people started forgetting about them... Though a son of the leader of all Yokai monsters, Mikoshi Nyudo, an adorable looking monster, Tofu Boy, has no talent in scaring the human beings. He is always scolded by his father and laughed at by his monster friends. One day, he decides to go on a journey to find out about the meaning of his life as a Yokai monster and to see his mother he's never met before.

Shinichi Tsuda, a Naoki Prize winning author, is working to publish his newest story. It revolves around Tsuyama, a driver for a call girl business in Toyama Prefecture, who comes across a mysterious counterfeit bill and has his life targeted by underworld kingpin Kurata. Is his story fact or fiction? His editor, Nahomi Torikai, decides to verify whether his latest work is mere fiction based on real-life experiences. She looks into a family that vanished, a post office worker who went missing, a shady load of cash, the whereabouts of the doves, and the fateful encounter from that night... A series of shocking facts are revealed from Tsuda’s stories. Why did the counterfeit money end up in Tsuda’s hands? What is the “ending” that Tsuda wished to portray?