Movie
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.
Where to Watch
Rent
Amazon Video
Google Play Movies
YouTube
Amazon Video
Google Play Movies
YouTube
Buy
Amazon Video
Google Play Movies
YouTube
Amazon Video
Google Play Movies
YouTube
Availability data provided by JustWatch via TMDB
Billed 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)
Hakuzan Kanda
Robot at the Tokyo Station Lost & Found Center (voice)
Tasuku Hatanaka
High School Student (voice)
Asami Sanada
Great-Grandma (voice)
Spoiler-Safe Screening Room
Premiere Discussions & Theories 0
Share reactions, easter eggs, and fan theories with automatic click-to-reveal spoiler shields.
Join the Screening Room
Sign in to post episode reactions, fan theories, and upvote community dispatches.
Loading discussion thread...
Audience Ledger
Community Micro-Reviews
Concise 1-sentence dispatches from DidItDrop members.
No micro-reviews yet — rate 1–4★ above and log the first 1-sentence take.
Double Feature
More Like This
Recommended titles paired with Mirai.
