Chrno Crusade

In 1920s America, Sister Rosette Christopher and her companion Chrono fight demons that threaten the peace after the Great War. Rosette is an exorcist with the Magdala Order, though the pair often cause more destruction than the demons they pursue. During a mission, they meet Azmaria, a young girl with a beautiful voice who is being targeted by her stepfather. As Rosette and Chrono try to save her, more comes to light about the nature of their relationship and the secrets behind the pair.