Fudomine Middle School's tennis captain, Kippei Tachibana, asks rival school captains Kunimitsu Tezuka, Keigo Atobe, and Kuranosuke Shiraishi to assist him with his team's practice. Shiraishi's teammate, Koharu Konjiki, decides to tag along in hopes of being able to see his crush. Instead, Konjiki ends up becoming infatuated with both Tezuka and Atobe and struggles to pick between the two.