One year has passed after the great battle against the Orochi (gigantic snake). Tenka Kumo had been paralyzed from the final battle and he took part of the government’s human experiment before the battle. Tenka withdrew himself from society but his younger brothers Soramaru and Chutaro find out the secret past about their older brother.
Unfortunately the movie Donten: Laughing Under the Clouds - Gaiden: Chapter 1 - One Year After the Battle is not yet available on HBO Max.
| Camera | Hideki Imaizumi | Director of Photography |
| Visual Effects | Takuma Ebisu | Animation Director |
| Directing | Tetsuya Wakano | Director |
| Sound | Shoji Hata | Sound Director |
| Visual Effects | Natsuko Suzuki | Animation Director |
| Visual Effects | Kenji Fujisaki | Animation Director |
| Sound | Yutaka Yamada | Original Music Composer |
| Visual Effects | Miyuki Kowata | Color Designer |
| Art | Tetsuya Wakano | Storyboard Artist |
| Directing | Koichi Usami | Action Director |
| Sound | Haruka Matsushita | Sound Recordist |
| Sound | Shoji Hata | Sound Mixer |
| Editing | Katsuhiro Kimura | Online Editor |
| Art | Shinya Asanuma | Prop Designer |
| Art | Kenji Fujisaki | Prop Designer |
| Visual Effects | Kenji Fujisaki | Key Animation |
| Directing | Hitomi Ezoe | Assistant Director |
| Visual Effects | Shinichi Nozaki | Animation Director |
| Visual Effects | Shinichi Nozaki | Key Animation |
| Visual Effects | Keizou Ichikawa | Animation Director |
| Visual Effects | Keizou Ichikawa | Key Animation |
| Visual Effects | Koichi Usami | Key Animation |
| Visual Effects | Takaaki Chiba | Key Animation |
| Visual Effects | Masaaki Tanaka | Key Animation |
| Visual Effects | Kenta Mimuro | Key Animation |
| Visual Effects | Yuki Masuya | Key Animation |
| Visual Effects | Sakiko Uda | Key Animation |
| Visual Effects | Michiko Tomoda | Key Animation |
| Visual Effects | Yui Kinoshita | Key Animation |
| Visual Effects | Shouko Muroyama | Key Animation |
| Visual Effects | Tamami Izawa | Key Animation |
| Visual Effects | Miki Kaneko | Key Animation |
| Visual Effects | Ryota Obana | Key Animation |
| Visual Effects | Naoto Yoshida | Key Animation |
| Visual Effects | Yuko Hariba | Key Animation |
| Visual Effects | Hiroshi Kohara | Key Animation |
| Visual Effects | Yusuke Shingu | Key Animation |
| Visual Effects | Reina Kawasaki | Key Animation |
| Visual Effects | Manabu Yasumoto | Key Animation |
| Visual Effects | Masashi Sato | Key Animation |
| Visual Effects | Asami Shimizu | Key Animation |
| Visual Effects | Tatsuaki Okamoto | Key Animation |
| Visual Effects | Shoko Yasuda | Key Animation |
| Visual Effects | Ritsu Tominaga | Key Animation |
| Visual Effects | Wakako Yoshida | Key Animation |
| Visual Effects | Yuki Nakajima | Key Animation |
| Visual Effects | Etsuko Yokoyama | Key Animation |
| Visual Effects | Akane Imada | Key Animation |
| Visual Effects | Masami Nagata | Key Animation |
| Visual Effects | Ryoko Kawamura | Key Animation |
| Visual Effects | Hitoshi Kamata | Key Animation |
| Visual Effects | Hiroshi Numata | Key Animation |
| Visual Effects | Tomosato Hosokawa | Key Animation |
| Visual Effects | Ayumi Miwa | Key Animation |
| Visual Effects | Satoshi Noma | Key Animation |
| Visual Effects | Yuichiro Yamada | Key Animation |
| Visual Effects | Sun Meng | Key Animation |
| Visual Effects | Chie Nishio | Key Animation |
| Visual Effects | Akito Dobashi | Key Animation |
| Visual Effects | Yoshimi Imagawa | Key Animation |
| Visual Effects | Miho Matsuura | Key Animation |
| Visual Effects | Nao Nakamoto | Key Animation |
| Visual Effects | Takanori Suzuki | Key Animation |
| Visual Effects | Takeshi Matsuda | Key Animation |
| Crew | Ayuko Harada | Special Effects |
| Art | Miu Miyamoto | Art Direction |
| Art | Miu Miyamoto | Background Designer |
| Art | Hiroki Ozaki | Background Designer |
| Camera | Yuuki Aida | Director of Photography |
| Sound | Noriko Izumo | Sound Effects |
| Visual Effects | Kamoyuki Mitani | Key Animation |
| Visual Effects | Hisateru Manabe | Key Animation |
| Visual Effects | Kiko Hashimoto | Key Animation |
| Visual Effects | Hiromi Ariga | Key Animation |
| Visual Effects | Junko Yoshigai | Key Animation |
| Visual Effects | Yuki Muraosa | Key Animation |
| Writing | Eiji Umehara | Series Composition |
| Writing | Eiji Umehara | Screenplay |
| Production | Yoshimasa Okunaga | Producer |
| Production | Noriko Kosukegawa | Producer |
| Sound | Mami Takaishi | Music Producer |
| Production | Toshio Iizuka | Executive Producer |
| Production | Hirotsugu Ose | Producer |
| Sound | Kohei Chida | Music Director |
| Visual Effects | Kenji Fujisaki | Character Designer |
| Visual Effects | Sayaka Takase | Character Designer |
| Visual Effects | Kii Tanaka | Character Designer |
| Visual Effects | Kii Tanaka | Supervising Animation Director |
| Visual Effects | Kii Tanaka | Animation Director |
| Visual Effects | Kii Tanaka | Key Animation |
| Visual Effects | LAN | Key Animation |
| Directing | Tetsuya Wakano | Second Unit Director |
| Directing | Hitomi Ezoe | Second Unit Director |
| Sound | Masafumi Watanabe | Foley Artist |
| Visual Effects | Yuzuru Funakoshi | Compositing Artist |
| Visual Effects | Fumito Nanba | Compositing Artist |
| Visual Effects | Fumiya Shima | Compositing Artist |
| Visual Effects | Shinya Kanetake | Compositing Artist |
| Visual Effects | Mai Nakamura | Compositing Artist |
| Art | Yasufumi Soejima | Storyboard Artist |
