Yu Higashi, a high school girl, aims to be an idol. To achieve her dream, she sets four rules for herself: she will not be active on social media, she will not have a boyfriend, she will not stand out in school, and she will make friends with beautiful girls from the north, south, east, and west.
Unfortunately the movie Trapezium is not yet available on HBO Max.
| Directing | Masahiro Shinohara | Director |
| Sound | MAISONdes | Theme Song Performance |
| Sound | Masaru Yokoyama | Original Music Composer |
| Writing | Yuko Kakihara | Screenplay |
| Writing | Kazumi Takayama | Novel |
| Sound | Hoshimachi Suisei | Theme Song Performance |
| Sound | Asaki Yuikawa | Theme Song Performance |
| Sound | Hina Yomiya | Theme Song Performance |
| Sound | Reina Ueda | Theme Song Performance |
| Sound | Haruka Aikawa | Theme Song Performance |
| Visual Effects | Rio | Character Designer |
| Visual Effects | Rio | Supervising Animation Director |
| Visual Effects | Kerorira | Supervising Animation Director |
| Costume & Make-Up | Masako Itou | Costume Design |
| Art | Yoko Kuhara | Prop Designer |
| Art | Koji Watanabe | Prop Designer |
| Art | Akane Itoda | Prop Designer |
| Crew | Mutsumi Saitoh | Special Effects |
| Visual Effects | Mutsumi Saitoh | 2D Artist |
| Art | Seiki Tamura | Art Direction |
| Visual Effects | Kazuko Nakashima | Color Designer |
| Visual Effects | Katsuaki Miyaji | CGI Director |
| Editing | Akinori Mishima | Editor |
| Sound | Jin Aketagawa | Sound Director |
