Satou Ichirou once called himself 'Maryuuin Kouga' and behaved as if he were a hero in a fantasy world. His strange behavior caused his classmates to bully him and he left the school. At his new school, he tries to behave like a normal boy, but one day he meets a girl who cosplays with a blue cape. She calls herself "a researcher traveling from the outer world to search for the 'Dragon Terminal'". At first, Ichirou rejects the girl, Satou Ryouko, because her behavior reminds him of his embarrassing past, but he changes his mind after seeing her getting bullied. In order to bring Ryouko back to real life, Ichirou accepts her and his past and begins the final battle as Maryuuin Kouga.
Unfortunately the movie Aura: Koga Maryuin's Last War is not yet available on HBO Max.
| Sound | Katsuhiro Nakajima | Sound Effects |
| Sound | Michiru Oshima | Original Music Composer |
| Directing | Seiji Kishi | Director |
| Writing | Romeo Tanaka | Novel |
| Writing | Jun Kumagai | Screenplay |
| Visual Effects | Kazuaki Morita | Animation Director |
| Camera | Keisuke Nozawa | Director of Photography |
| Art | Takeshi Waki | Art Direction |
| Sound | Satoki Iida | Sound Director |
| Visual Effects | Koichi Usami | Key Animation |
| Visual Effects | Ryo Tanaka | Key Animation |
| Visual Effects | Keisuke Watabe | Key Animation |
| Visual Effects | Aya Tanaka | Key Animation |
| Visual Effects | Hidenobu Takahashi | Key Animation |
| Visual Effects | Shinya Yamada | Key Animation |
| Visual Effects | Reika Hoshino | Key Animation |
| Visual Effects | Yasunori Matsumura | Key Animation |
| Visual Effects | Koji Ito | Key Animation |
