Kagechika CHIZAKA (CHISAKA) was one of the main retainers of Kenshin UESUGI, but it is said that the guardian deity (statue of Akasagarbha Bodhisattva) for Yoichi was introduced to the CHIZAKA (CHISAKA) clan through a marital relationship with the NASU clan.
千坂景親は上杉謙信の重臣だが、千坂氏は那須氏とは婚族関係にあり、与一の守本尊（虚空蔵菩薩像）が伝わっていたとされる。