A prequel set one day before the events of the Promare film.
- Other Title: Promare: Galo-hen, PROMARE(プロメア)ガロ編, Promare, プロメア
- Status: Completed
- Sub/Dub: Anime Sub
- Anime Type: ONA
- Genres: Action, Mecha, Sci-Fi, Super Power, Shounen, Animation, Science Fiction
- Characters: Thymos, Galo
- Score: 6.89
- Rank: 4563
- Popularity: 3995