Ken Utsui

as Fumio Kaneko

as Ruka's grandfather

as Kaneko

as Isao Kurume (9 episodes)

as Ryuichiro Kuroda

as 白石聡

as Ichinomiya (10 episodes)

as Tomekichi Nanase

as Kanau Yoshikazu

as Gentaro Minagawa (10 episodes)

as Sadayoshi Iketani

as Kōtarō Inō

as Shuhei Hirayama

as Denzo Miyagi

as Fumio Kaneko (1 episode)

as Ryuichiro Kuroda (33 episodes)

as Ryotaro Takamine (9 episodes)

as Masumi Arai (12 episodes)