Shoma Mihara, a freshman in high school, receives a sudden message from his friend Atsushi inviting him to meet again at a mysterious festival. Having been unable to contact Atsushi for three and a half years, Shoma jumps at the chance and heads to join the Starlight Festival, held in a deserted mountain village. Once there, Shoma searches for Atsushi but finds no trace of him. Instead Shoma meets Shiori, a young woman who’s also looking for someone. Kana, the director of the Starlight Festival, assures Shoma that he’ll be able to reunite with Atsushi before the festivities end. Both Shoma and Shiori end up helping with preparations, only to find themselves pulled deeper and deeper into a series of strange happenings. Will Shoma be able to meet his dear friend...?
Unfortunately the movie Starlight Promises is not yet available on HBO Max.
| Sound | Taro Iwashiro | Original Music Composer |
| Visual Effects | Ken Yamamoto | Key Animation |
| Visual Effects | Yuka Hashimoto | Animation Director |
| Visual Effects | Akihiro Sueda | Key Animation |
| Visual Effects | Tetsuya Akutsu | Key Animation |
| Visual Effects | Miyoko Shikibu | Animation Director |
| Visual Effects | Hiroya Iijima | Creature Design |
| Visual Effects | Hiroya Iijima | Animation Director |
| Directing | Cai Xinya | Assistant Director |
| Art | Kouji Hashiguchi | Art Designer |
| Visual Effects | Maziro | Character Designer |
| Visual Effects | Maziro | Supervising Animation Director |
| Art | Kouji Hashiguchi | Art Direction |
| Visual Effects | Akiko Murayama | Key Animation |
| Visual Effects | Wang Guonian | Animation Director |
| Visual Effects | Asuna Imahashi | Key Animation |
| Visual Effects | Asuna Imahashi | Animation Director |
| Visual Effects | Shinji Itadaki | Animation Director |
| Visual Effects | Shinji Itadaki | Key Animation |
| Writing | Kazuya Murata | Screenplay |
| Writing | Kazuya Murata | Original Story |
| Visual Effects | Youko Kuboyama | Key Animation |
| Editing | Kumiko Sakamoto | Editor |
| Production | Nao Hirasawa | Producer |
| Sound | Jin Aketagawa | Sound Director |
| Visual Effects | Makiko Kojima | Color Designer |
| Visual Effects | Senbon Umishima | Character Designer |
| Directing | Kazuya Murata | Director |
| Visual Effects | Mamiko Nakanishi | Key Animation |
