Junko Hori

as Rain Boy (voice)

Satomi Majima

as Mouta (voice)

Daisuke Gori

as Bancho (voice)

Ichiro Nagai

as Azuki-arai (voice)

Kiyoshi Kawakubo

as Mota (adult, voice)

Show Hayami

as Mota (teen, voice)

Takeshi Aono

as Father (voice)

Yuri Nashiwa

as Mother (voice)

Bin Shimada

Runa Akiyama

Shozo Iizuka

Takashi Yasuda

Tetsuya Yamazaki

Yuko Mita