Ruth

Chise and the others met a churchyard grim (Church Grim) in a certain church's graveyard. Originally just a black dog named "Yurisii," he continued to guard the grave even after the death of his owner, Isabel, transforming into a churchyard grim. Since he did not realize he was a dog and thought of Isabel as his "sister," he could take human form. Seeing Isabel's features in Chise, he willingly made a familiar contract with her and was given the name "Ruth" (which means "Compassionate Friend" in Hebrew). Initially appearing as a young man, he could change to his original dog form as the situation demanded, and after the contract, he normally stayed in his dog form, taking the form of a boy of Chelthttps' age when needed.