Unhappy after his new baby sister displaces him, four-year-old Kun begins meeting people and pets from his family's history in their unique house in order to help him become the big brother he was meant to be.
Unfortunately the movie Mirai is not yet available on HBO Max.
| Editing | Ayaka Minami | Online Editor |
| Production | Mirai Kase | Publicist |
| Production | Hitoshi Ito | Associate Producer |
| Visual Effects | Hiroyuki Aoyama | Animation Director |
| Art | Yohei Takamatsu | Art Direction |
| Art | Takashi Omori | Art Direction |
| Art | Kosuke Hayashi | Background Designer |
| Visual Effects | Hiroomi Yamakawa | Key Animation |
| Sound | Tatsuro Yamashita | Theme Song Performance |
| Visual Effects | Takayuki Hamada | Key Animation |
| Visual Effects | Tatsuya Tomaru | Key Animation |
| Visual Effects | Yoshihiro Kitano | Key Animation |
| Art | Naomi Kasugai | Background Designer |
| Art | Yoji Takeshige | Background Designer |
| Visual Effects | Kazutaka Ozaki | Key Animation |
| Visual Effects | Kenji Hachizaki | Key Animation |
| Visual Effects | Tadashi Sakazaki | Key Animation |
| Art | Kikuyo Yano | Background Designer |
| Visual Effects | Atsuko Tanaka | Key Animation |
| Visual Effects | Satoko Morikawa | Key Animation |
| Art | Satoko Nakamura | Background Designer |
| Art | Yuka Nitta | Background Designer |
| Visual Effects | Fumie Imai | Key Animation |
| Visual Effects | Mariko Yamamoto | Key Animation |
| Visual Effects | Atsuko Nozaki | Key Animation |
| Visual Effects | Hiroshi Kawaguchi | Key Animation |
| Art | Risa Iwatsuki | Background Designer |
| Visual Effects | Masaru Ooshiro | Key Animation |
| Visual Effects | Takeshi Inamura | Key Animation |
| Visual Effects | Ryo Horibe | CGI Director |
| Art | Yumi Ishii | Background Designer |
| Art | Osamu Nakajima | Background Designer |
| Visual Effects | Harumi Takagi | Key Animation |
| Visual Effects | Hideki Hamasu | Key Animation |
| Directing | Toshimasa Ishii | Assistant Director |
| Visual Effects | Tomoaki Takase | Key Animation |
| Visual Effects | Izumi Seguchi | Key Animation |
| Visual Effects | Katsuyoshi Nakatsuru | Key Animation |
| Visual Effects | Misato Hamada | Key Animation |
| Visual Effects | Ryosuke Nishii | Key Animation |
| Visual Effects | Shinichiro Yamada | Key Animation |
| Visual Effects | Yuka Koiso | Key Animation |
| Visual Effects | Hiroyuki Aoyama | Character Designer |
| Art | Ryoko Ina | Background Designer |
| Visual Effects | Masafumi Yokota | Key Animation |
| Visual Effects | Naoki Tate | Key Animation |
| Art | Yoshikazu Fukutome | Background Designer |
| Visual Effects | Shougo Furuya | Key Animation |
| Visual Effects | Ayako Hata | Animation Director |
| Art | Uken Ryu | Background Designer |
| Art | Kiyomi Ota | Background Designer |
| Art | Kazuo Oga | Background Designer |
| Art | Katsushi Aoki | Background Designer |
| Art | Kurumi Katayama | Background Designer |
| Art | Kiyoshi Sameshima | Background Designer |
| Art | Makoto Tanijiri | Production Design |
| Production | Yuya Machida | Associate Producer |
| Sound | Kenji Shibasaki | Sound Effects |
| Production | Kei Kushiyama | Associate Producer |
| Production | Daigo Ikeda | Line Producer |
| Art | Tatsuya Kameyama | Production Design |
| Production | Shuzo Kasahara | Associate Producer |
| Visual Effects | Takaaki Yamashita | Layout Supervisor |
| Art | Reio Ono | Production Design |
| Sound | Yoshio Obara | Sound Recordist |
| Visual Effects | Osamu Mikasa | Color Designer |
| Art | Yoshitaka Kameda | Production Design |
| Art | Atsuko Nakagawa | Production Design |
| Writing | Mamoru Hosoda | Original Story |
| Sound | Masaru Ohgawara | Foley Artist |
| Sound | Sakura Katsumata | Foley Artist |
| Sound | Natsuko Inoue | Foley Artist |
| Art | Harumi Ikeya | Background Designer |
| Writing | Mamoru Hosoda | Screenplay |
| Editing | Misato Takikawa | Assistant Editor |
| Sound | Kyoko Kitahara | Music Producer |
| Production | Kai Hasako | Production Assistant |
| Production | Yoshinobu Obida | Publicist |
| Sound | Kazunori Shimizu | Music Editor |
| Directing | Mamoru Hosoda | Director |
| Production | Seiko Oguchi | Casting Director |
| Production | Genki Kawamura | Producer |
| Production | Yuichi Adachi | Producer |
| Art | Anri Jojo | Production Design |
| Sound | Masakatsu Takagi | Original Music Composer |
| Costume & Make-Up | Daisuke Iga | Costume Design |
| Production | Takuya Ito | Producer |
| Editing | Shigeru Nishiyama | Editor |
| Production | Nozomu Takahashi | Production Manager |
| Production | Yuichiro Saito | Producer |
| Sound | Kenji Ashimoto | Orchestrator |
