In a quiet corner of the city, four-year-old Kun Oota has lived a spoiled life as an only child with his parents and the family dog, Yukko. But when his new baby sister Mirai is brought home, his simple life is thrown upside-down; suddenly, it isn't all about him anymore. Despite his tantrums and nagging, Mirai is seemingly now the subject of all his parents' love.
To help him adapt to this drastic change, Kun is taken on an extraordinary journey through time, meeting his family's past, present, and future selves, as he learns not only what it means to be a part of a family, but also what it means to be an older brother.
[Written by MAL Rewrite]
Characters & Voice Actors

Oota, Mirai
Main
Kuroki, Haru
Japanese
Oota, Kun
Main
Kamishiraishi, Moka
Japanese
Baaba
Supporting
Miyazaki, Yoshiko
Japanese
Jiiji
Supporting
Yakusho, Koji
Japanese
Okaasan
Supporting
Aso, Kumiko
Japanese
Otousan
Supporting
Hoshino, Gen
JapanesePromotion Videos
Recommended for you
Ride Back
TV
24m
Saber Marionette J to X
TV
25m
Slayers: The Motion Picture
Movie
66m
Rewrite: Moon and Terra
TV
24m
Saiyuuki Gaiden: Kouga no Shou
OVA
30m
Slayers Revolution
TV
23m
Cyborg 009
TV
25m
Fafner of the Blue Sky
TV
24m
Beyond the Heavens
TV
23m
Patalliro!
TV
24m
Gosenzo-sama Banbanzai!
OVA
30m
Pokémon The Series: XY
TV
23m
Adieu Galaxy Express 999
Movie
130m
Bubblegum Crisis
OVA
41m
Rave Master
TV
24m