The protagonist travels through fictional history. Shou is a translator. Although he is young, he is already quite famous in the translation industry. Recently, he was translating a mystery novel by a writer (quietly revealed to be Gong Oh), and many questions arose. It is said that the stories in this novel are the writer's personal experiences in his youth. The translator often dreams that he returns to the era of the novel and is immersed in the story. He clearly knows that it is a dream, but it is so real, so he begins to doubt. . . .