Set in a future world. Japan has created a great medical technology that controls ethics, health, and social interaction to create a perfect world. Three young girls attempt to stand up to this by committing suicide, but it doesn't work. Years later, Tuan, one of the girls who attempted suicide must prevent a crisis that threatens this "perfect" world.
Unfortunately the movie Harmony is not yet available on HBO Max.
| Art | Hiroyuki Ito | Art Direction |
| Art | Hiroyuki Ito | Background Designer |
| Art | Kosuke Hayashi | Background Designer |
| Visual Effects | Satoshi Sakai | Key Animation |
| Visual Effects | Miyuki Nakamura | Key Animation |
| Visual Effects | Hiroyuki Okuno | Key Animation |
| Art | Masashiro Watanabe | Background Designer |
| Visual Effects | Mayumi Oda | Key Animation |
| Visual Effects | redjuice | Character Designer |
| Art | Marefumi Niibayashi | Background Designer |
| Art | Osamu Hasada | Background Designer |
| Art | Kazuyoshi Takeuchi | Prop Designer |
| Visual Effects | Kazuyoshi Takeuchi | Animation Director |
| Visual Effects | Kazuyoshi Takeuchi | Key Animation |
| Directing | Michael Arias | Director |
| Production | Tomoko Ogiwara | Producer |
| Art | Kazuhiro Arai | Background Designer |
| Art | Takashi Nakamura | Storyboard Artist |
| Art | Marefumi Niibayashi | Art Direction |
| Writing | Satoshi Itō | Novel |
| Art | Osamu Hasada | Art Direction |
| Sound | Yoshihiro Ike | Original Music Composer |
| Editing | Kengo Shigemura | Editor |
| Production | Eiko Tanaka | Producer |
| Art | Kosuke Hayashi | Art Direction |
| Directing | Takashi Nakamura | Director |
| Production | Yoko Matsuzaki | Executive Producer |
| Writing | Koji Yamamoto | Screenplay |
| Production | Noriko Ozaki | Producer |
| Production | Takashi Yoshizawa | Producer |
| Production | Koji Yamamoto | Executive Producer |
| Art | Seiki Tamura | Background Designer |
| Sound | Hideaki Kizawa | Sound Assistant |
| Sound | Naoki Imazawa | Sound Assistant |
| Sound | Yasushi Nagura | Recording Supervision |
| Sound | Koji Kasamatsu | Sound Designer |
| Visual Effects | Kumiko Naruke | Color Designer |
| Visual Effects | Zhao Xiangchun | Key Animation |
| Visual Effects | Wakana Yamashina | Key Animation |
| Visual Effects | Koji Watanabe | Key Animation |
| Visual Effects | Koji Watanabe | Mechanical Designer |
| Visual Effects | Emi Watanabe | Key Animation |
| Sound | Yukie Saeki | Sound Engineer |
| Visual Effects | Yuusuke Hirota | CGI Director |
| Sound | Hiroaki Sano | Music Producer |
| Visual Effects | Manabu Ohashi | Key Animation |
| Visual Effects | Yuko Yamamoto | Key Animation |
