Miraï, ma petite soeur (v.o.s.-t.f.)
Moka Kamishiraishi
as Kun (voice)
Haru Kuroki
as Mirai (voice)
Gen Hoshino
as Father (voice)
Kumiko Asô
as Mother (voice)
Mitsuo Yoshihara
as Mysterious Man (voice)
Yoshiko Miyazaki
as Grandmother (voice)
Koji Yakusho
as Grandfather (voice)