Labyrinth City Asylum The Motion Anime

Iris Cromel, a saint from the church, who was forced to become a vampire during a battle with the True Ancestor.

Now she faces excommunication from the church due to her transformation into a demonic being. Soon she learns of a certain holy relic located deep within the Labyrinth City, which could completely seal her vampire power. Iris sets out for the Labyrinth City... Will she really be able to conquer the dungeon and regain her human form?