For the club! For the team competition! This secret must never be revealed!

The members of the Tengi High School badminton club are working hard to recruit new members in order to make it to the team competition, a long-sought after goal. There is only one person left to reach the number required to participate in the team competition. However, no one has shown up to join the club... Just when they thought they had lost their chance, a new member, Kuro, arrives like a savior! The whole badminton club is excited to have the long-awaited fifth member. However, Kuro has a terrible secret that could shake the club!