Due to the death of Yoshitoki HOJO, Mistumune IGA and Iga no kata, his younger sister and the second wife of Yoshitoki, schemed to have Masamura HOJO, her biological son, to assume the position of shikken, regent to the shogunate, and to have Sanemasa ICHIJO, her son-in-law, to assume the Shogunship.
北条義時の死去に伴い、伊賀光宗とその妹で義時の後妻伊賀の方が、伊賀の方の実子北条政村の執権就任と、娘婿一条実雅の将軍職就任を画策した。