Izumi, a college student, is invited by a classmate, Yuji, who was a hero of the baseball club in high school, and gets lost in a mysterious place. There was a mysterious market called “Night Market” where youkai sell various goods and get whatever they want. Yuji, who lost his nightmare with his younger brother when he was an elementary school student, sold his younger brother in exchange for his “baseball talent”. What is Yuji's desire to return to "Night Market" again?