The youngest member AH (during events of anime to she is only 15 years). Comes from gipsies. Her parents were gone during a carnival in Venice (just when Astoroshe stormed and smashed a city). Given the codename, Gypsy Queen, Sister Kaya is a valuable member of the AX. Known for her loyalty to Caterina and the Church, she despises all vampires and believes that she is doing the right thing by killing them.