|Relatives||Yayoi Aida (elder sister)|
|Japanese Voice||Masaya Onosaka|
|English Voice||Peter Oldring|
|[v · t · e]|
Hikoichi Aida (相田 彦一Aida Hikoichi) aspires to become a player like his teammates but, not being up to their level, he stays with the reserves and hangs around their coach, Moichi Taoka , and acts more as a team manager than a full player, taking detailed notes during matches. His catchphrase is "Gotta check it out!" aside from shouting "Unbelievable!!!" every time something exciting happens during a match. Hikoichi too considers Sakuragi a great player, because Sakuragi convinced him when they first met. Hikoichi also idolizes Miyagi because he is a starter for Shohoku despite his short height. During The Match Between Shoyo and Shohoku, he cheers for Miyagi and Sakuragi, Hikoichi's older sister Yayoi Aida is a reporter for a weekly basketball magazine.