The series focuses on the adventures of Arata Kasuga, a high school student, who is targeted by Lilith, a teacher at a mystical school. Given three choices in an effort to help save the breakdown phenomenon of the world by evil forces and while attempting to solve the mystery of his beloved cousin and childhood friend, Hijiri, who disappeared to a difference space.
Unfortunately the movie Trinity Seven: Heaven's Library & Crimson Lord is not yet available on HBO Max.
| Visual Effects | Shinpei Tomooka | Character Designer |
| Writing | Kenji Saito | Original Story |
| Sound | ZAQ | Theme Song Performance |
| Art | Akinari Nao | Original Series Design |
| Writing | Kenji Saito | Comic Book |
| Sound | Yasunori Ebina | Sound Director |
| Writing | Kenji Saito | Original Series Creator |
| Camera | Mami Goto | Director of Photography |
| Editing | Kazuhiko Seki | Editor |
| Visual Effects | Kaoru Nishimura | Color Designer |
| Art | Megumi Yamamoto | Art Direction |
| Visual Effects | Tatsuo Nakajima | Key Animation |
| Visual Effects | Naoto Yamaguchi | 3D Animator |
| Visual Effects | Koji Kawashima | 3D Animator |
| Visual Effects | Shinichi Iimura | Key Animation |
| Directing | Hiroshi Nishikiori | Director |
| Writing | Kenji Saito | Screenplay |
