Overview

Four-year-old Kun struggles with jealousy after his newborn sister, Mirai, begins receiving most of his family’s attention. Retreating to the garden, he encounters Mirai as a teenager from the future and embarks on extraordinary journeys across his family’s past, gradually discovering new perspectives on love, belonging and what it means to become an older brother.

Cast

Moka Kamishiraishi

Kun (voice)

Haru Kuroki

Mirai (voice)

Gen Hoshino

Father (voice)

Kumiko Aso

Mother (voice)

Mitsuo Yoshihara

Mysterious Man (voice)

Yoshiko Miyazaki

Grandmother (voice)

Koji Yakusho

Grandfather (voice)

Masaharu Fukuyama

Young Man (voice)

Kaede Hondo

Baby Mirai (voice)

Daniel Dae Kim

Great-Grandfather (Young Man) (voice)