Hisame

Hisame, a Japanese priestess, first appears in the later chapters of the first volume, when she is searching for a cursed sword fallen into the hands of Westerners. She fights Meg and Angela for it, all the while using some sort of giant demonic hand that reaches out from another dimension, and eventually leaves with it, saying, "Out of all the places for a demon to reside...a church?" (Referring to Angela)
She's later revealed to be a part of Meg and Angela's organization and assists them in the fights against Gilles de Rais.