A series of three oneshots with different characters.

Oneshot 1:
Hiroto Fujiki is the ace on his high school baseball team. He takes an interest in one of his groupies, only to find out that "she" is not who "she" appears to be.

Oneshot 2:
Ayumu Tsumori is acting as the manager of his school's baseball team, and he borrows a book from his sister to help improve their chances in an upcoming match. Following the book's instructions, Ayumu starts cross-dressing for the team.

Oneshot 3:
Masaki Mizuhara fills in on his sister's baseball team, and catches the eye of the team's ace pitcher Hirona Fujiki, the sister to Hiroto from the first oneshot.