Yoshimasa was not fortunate enough to have any sons, so he adopted his younger brother Yoshimi ASHIKAGA and appointed him his heir, but when Tomiko gave birth to a son, Yoshihisa ASHIKAGA, two rival factions, the faction supporting Yoshimi and the one supporting Yoshihisa, came into conflict.
義政は子供に恵まれなかったために弟の足利義視を養子として後継者にする予定であったが、富子に息子・足利義尚が生まれると、後継者を巡って義視支持派と義尚支持派が対立した。