Yumemi invites everyone to witness the gamble, which will take place after her in-school concert arranged by Kaede. Yumeko and Yumemi play games designed to test idol skills, such as dancing and singing, where Yumemi allows Yumeko to win several games so there appears to be a risk she will lose. For the final game they have to guess the birth month of members of the audience, and is crucial in that should Yumeko lose this game she loses the entire gamble...