Mahoutsukai no Yome Temporada 1 Episódio 4
Long ago, the humans and cats of Ulthar, city of cats, were struck by a great tragedy. For generations, the souls of those who were at the center of this tragedy have been sealed away by the king of cats. Chise and Elias travel to Ulthar in order to complete Simons second task: to purify the spirits that remain.