Yoichiro Saito

as Isogai

as 与羽诚一 (2 episodes)

as Toshio Watari (4 episodes)

as Homeroom Teacher (voice)

as Tokio Takenaka

as Gunji Yasuo

as Haibara Atsuhiko (13 episodes)

as 池田聡（いけだ さとし） (12 episodes)

as Isaki's Father

as Kuniko's Father

as Akihiko Shibuya

as Kitajima