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
Incredible Zorori
TV
24m
Kokkoku
TV
23m
Blue Submarine No. 6
OVA
32m
Roujin Z
Movie
79m
Terra Formars
TV
24m
Sky Blue
Movie
83m
Those Who Hunt Elves II
TV
24m
Jarinko Chie
Movie
109m
Akazukin Chacha OVA
OVA
24m
Classroom☆Crisis
TV
24m
Lost Song
TV
23m