A family is living in a small house in an obscure corner of a certain city — in that house lives the family's spoiled four-year-old boy Kun-chan. When Kun-chan gets a little sister named Mirai, he feels that his new sister stole his parents' love from him, and is overwhelmed by many experiences he undergoes for the first time in his life. In the midst of it all, he meets an older version of Mirai, who has come from the future.

Type: Movie
Episodes: 1
Status: Finished Airing
Aired: May 16, 2018
Producers: Toho
Licensors: GKIDS
Studios: Studio Chizu
Source: Original
Genres: Adventure, Drama, Fantasy
Duration: 1 hr. 43 min.
Rating: G - All Ages

Director: Mamoru Hosoda
Screenplay: Mamoru Hosoda
Music: Masakatsu Takagi
Producer: Yuichiro Saito

Theme Song Performance: Tatsuro Yamashita (OP, ED)

Haru Kuroki as Mirai-chan
Moka Kamishiraishi as Kun-chan

Gen Hoshino as Father
Kōji Yakusho as Grandfather
Kumiko Asou as Mother
Masaharu Fukuyama as Young Man
Mitsuo Yoshihara as Mysterious Man
Yoshiko Miyazaki as Grandmother