To celebrate their graduation from university Kaori and her two friends visit Okinawa in southern Japan for a short vacation. At the vacation house, provided by Tadashi's uncle, a numbing stench awaits the girls, and can be traced to a horrendously deformed, legged fish that Kaori kills. More and more of these creatures appear and portend a horrific change for the animal life in the area. A phone call from Kaori's fiancé Tadashi in Tokyo quickly shows the scope of this epidemic, when he is also attacked by these mechanized fish. Kaori immediately sets out on an perilous voyage to find out what happened to Tadashi, helped by Shirakawa — a videographer in search of the truth behind all this...
Unfortunately the movie Gyo: Tokyo Fish Attack is not yet available on HBO Max.
| Production | Atsuhiro Iwakami | Producer |
| Visual Effects | Takuro Takahashi | Character Designer |
| Visual Effects | Masayuki Kunihiro | Key Animation |
| Sound | Naoya Tanaka | Sound Mixer |
| Sound | Hajime Takakuwa | Sound Director |
| Visual Effects | Masaru Kimura | Key Animation |
| Visual Effects | Takeyoshi Omagari | Key Animation |
| Art | Kim Min-ji | Background Designer |
| Art | Reimi Sonegawa | Background Designer |
| Art | Yuko Fukayama | Background Designer |
| Visual Effects | Kenji Takehara | Compositing Artist |
| Visual Effects | Satoshi Takahashi | Key Animation |
| Visual Effects | Seiji Matsuda | Compositing Artist |
| Visual Effects | Momoko Toda | Compositing Artist |
| Visual Effects | Masato Takizawa | 3D Animator |
| Editing | Tsuyoshi Imai | Editor |
| Directing | Takayuki Hirao | Second Unit Director |
| Visual Effects | Emi Chiba | Color Designer |
| Art | Takamasa Nakakuki | Art Direction |
| Production | Tsuneo Takechi | Producer |
| Art | Kazuo Ebisawa | Background Designer |
| Sound | Go Shiina | Original Music Composer |
| Visual Effects | Shinsuke Yasuda | Key Animation |
| Visual Effects | Yuka Honma | Key Animation |
| Visual Effects | Tomonori Sudo | Key Animation |
| Visual Effects | Takashi Suhara | Key Animation |
| Art | Shoko Araki | Background Designer |
| Visual Effects | Hiroaki Tanaka | Compositing Artist |
| Visual Effects | Toshiharu Kudou | Key Animation |
| Visual Effects | Katsuya Kikuchi | Key Animation |
| Directing | Kei Tsunematsu | Second Unit First Assistant Director |
| Production | Junya Okamoto | Producer |
| Visual Effects | Yuichi Terao | 3D Animator |
| Visual Effects | Yasutoshi Niwa | Key Animation |
| Art | Akiko Kazato | Background Designer |
| Art | Kiwami Hatta | Background Designer |
| Visual Effects | Kouji Aoki | Compositing Artist |
| Art | Kazuo Ebisawa | Art Direction |
| Art | Satoru Kuwabara | Art Direction |
| Art | Takayuki Hirao | Storyboard Artist |
| Visual Effects | Dai Fukuyama | Key Animation |
| Visual Effects | Yuya Kishi | Key Animation |
| Visual Effects | Masaru Takeuchi | Key Animation |
| Visual Effects | Shinichi Igarashi | Compositing Artist |
| Art | Daisuke Yasuda | Background Designer |
| Visual Effects | Keita Shimizu | Key Animation |
| Visual Effects | Ryunosuke Murakami | Key Animation |
| Visual Effects | Masaharu Koyama | Key Animation |
| Visual Effects | Hiroyuki Uchida | Key Animation |
| Art | Yoshiko Kuroda | Background Designer |
| Visual Effects | Masato Takizawa | Compositing Artist |
| Visual Effects | Katsuaki Kamata | Compositing Artist |
| Sound | Kenji Shibasaki | Sound Effects |
| Visual Effects | Akio Shimotsukasa | Key Animation |
| Visual Effects | Shinpei Tomooka | Key Animation |
| Visual Effects | Atsushi Ogasawara | Key Animation |
| Visual Effects | Shunya Kikuchi | Key Animation |
| Visual Effects | Takuya Aoki | Key Animation |
| Visual Effects | Takatsugu Umeda | Key Animation |
| Visual Effects | Akihiko Uda | Key Animation |
| Visual Effects | Ato Nonaka | Key Animation |
| Visual Effects | Mitsuru Obunai | Key Animation |
| Visual Effects | Tetsuto Ito | Key Animation |
| Visual Effects | Etsuko Kawano | Key Animation |
| Visual Effects | Yuki Yamaguchi | Compositing Artist |
| Visual Effects | Koji Odate | Key Animation |
| Visual Effects | Ryota Furukawa | Key Animation |
| Art | Yuka Sanekata | Background Designer |
| Art | Michiko Morokuma | Background Designer |
| Visual Effects | Ryouichi Kaida | Key Animation |
| Visual Effects | Sae Yoshikawa | Compositing Artist |
| Visual Effects | Yuki Yamaguchi | 3D Animator |
| Visual Effects | Kazuki Nishiwaki | Compositing Artist |
| Visual Effects | Makoto Nakamura | Key Animation |
| Visual Effects | Tadashi Sugita | Key Animation |
| Art | Aki Inyama | Background Designer |
| Art | Shinichi Igarashi | Assistant Director of Photography |
| Editing | Kazumi Wakimoto | Assistant Editor |
| Camera | Yuichi Terao | Director of Photography |
| Production | Hikaru Kondo | Producer |
| Production | Ryu Suzuki | Line Producer |
| Sound | Yuji Akazawa | Sound Effects |
| Writing | Junji Ito | Novel |
| Writing | Akihiro Yoshida | Screenplay |
| Directing | Takayuki Hirao | Director |
| Writing | Takayuki Hirao | Screenplay |
