Kou Kitamura and Aoba Tsukishima, despite their families' close ties, have conflicting personalities. While Kou, the lone child of a sports shop owner, lacks interest in baseball, he possesses exceptional batting skills from practicing at the Tsukishima's batting center. In contrast, Aoba excels at pitching and adores the sport. Their shared bond is Wakaba Tsukishima, Aoba's sister and Kou's beloved. Wakaba inadvertently fuels their ongoing rivalry, yet a deeper connection between the rivals might be brewing. Only time will unveil whether baseball, their mutual passion, can help them surmount personal obstacles.