P13 / Japanese / Anime / Not Available
Adaption of the 6th Light Novel of series, it follows the story of two new characters -Riku and Shuvi- during the events of the Ancient War, prior to the 10 pledges.
| Director: Atsuko Ishizuka |
| Cast: Yoshitsugu Matsuoka, Ai Kayano, Yoko Hikasa, Yukari Tamura |
| Release Date: 16 September, 2017 |