A large spaceship appears over Tokyo three years before the story starts. A one-sided war against the seemingly harmless aliens ensues, sparking controversy and pacifism. Despite this unique and tragic event, high school girls Koyama Kadode and Nakagawa Ouran behave as if nothing has changed. They live their days like they always have. The focus of this story is not the alien invasion, but human nature, dialogue, growing up, and life.
Unfortunately the movie Dead Dead Demon's Dededede Destruction Part 1 is not yet available on HBO Max.
| Writing | Inio Asano | Comic Book |
| Directing | Tomoyuki Kurokawa | Director |
| Writing | Reiko Yoshida | Screenplay |
| Sound | Taro Umebayashi | Original Music Composer |
| Visual Effects | Nobutake Ito | Character Designer |
| Art | Mika Nishimura | Art Direction |
| Visual Effects | Nobutake Ito | Supervising Animation Director |
| Production | Takaaki Suzuki | Researcher |
| Visual Effects | Satoshi Takezawa | Color Designer |
| Camera | Takuma Morooka | Director of Photography |
| Editing | Masayuki Kurosawa | Editor |
| Sound | Takeshi Takadera | Sound Director |
| Visual Effects | Akira Inami | CGI Director |
| Production | Koichi Inaba | Executive Producer |
| Production | Nobumasa Sawabe | Executive Producer |
| Production | Shunsuke Muramatsu | Executive Producer |
| Production | Tatsumi Yoda | Executive Producer |
| Production | Yukio Kawasaki | Executive Producer |
| Production | Ayumi Ohigashi | Producer |
| Production | Junya Okamoto | Producer |
| Production | Shinya Keyamura | Producer |
| Production | Yoshikazu Beniya | Producer |
| Sound | Lilas Ikuta | Theme Song Performance |
| Sound | ano | Theme Song Performance |
