Kō Kitamura, whose family owns a sporting goods store, has known the Tsukishima girls since he was born. The Tsukishima family runs a batting center and cafe, and they have four daughters. There's Ichiyo, the responsible eldest; Wakaba, Kō's cheerful best friend; Aoba, who doesn't get along with Kō; and Momiji, the energetic youngest daughter. When Kō enters high school, he aspires to lead his baseball team to the Koshien National High School Championship as their ace pitcher and make Wakaba's dream come true.
Miyu Irino
Kō Kitamura (voice)
Haruka Tomatsu
Aoba Tsukishima (voice)
Akemi Kanda
Wakaba Tsukishima (voice)
Megumi Toyoguchi
Ichiyō Tsukishima (voice)
Noriko Shitaya
Momiji Tsukishima (voice)
Takahiro Sakurai
Yūhei Azuma (voice)
