Promare / Side: Lio
- Cast: Taichi Saotome, Kenichi Matsuyama, Ayane Sakura, Rikiya Koyama, Taiten Kusunoki
- Duration: 10 minutes
- Genre: Animation, Action, Science Fiction
- Rating: 6.9/10
- Release Date: 2019-05-24
A second prequel set one day before the events of the Promare film.
