Hikaru Zaizen

Hikaru went to Shitenhouji as a freshman. At that time, the tennis club was lacking new members; if there were no new members, the team could not continue to exist. The team tried to make Hikaru laugh in order to make him join the club, but they failed to do so. Despite that, Hikaru was willing to join the club after a brief practice match with Shiraishi, Kenya, and Kojiro.

He is known as the "Prodigy" in the team.