According to animeanime.jp, the 6th volume of the DVD/BD series for this season’s TV series Tasogare Otome x Amnesia will contain an unaired episode 13.
The monthly release of the 6-volume DVD/BD series will begin on June 27th.
Source: animeanime.jp (Japanese), Official Site (Japanese)
Tasogare Otome X Amnesia Special on MAL
