The season has reached autumn. After the summer tournament, the Fubayashi Naka Baseball Club is forced to retire from the highest grade student, Tamba, and create a new team. However, there are only eight members left. Therefore, I asked Tamba, who retired, for a helper in the practice game on the weekend, and managed to continue the activity with nine people. Daigo and his colleagues are thinking about recruiting new members of the baseball club from current students in an attempt to solve the shortage of members. Under such circumstances, it is said that Chisato, a first-year student, has a new member recruitment attestation ...! ??