Although it was decided that Yoshimi ASHIKAGA, Yoshimasa's brother, would become the next shogun, Tomiko hoped that her biological child Yoshihisa ASHIKAGA would take the position of shogun; moreover, the Hino Family, Tomiko's parents' home, also backed Yoshihisa, and the battle of the succession to (the headship of) the house in the House of Ashikaga shogunate, coupled with the conflict between the Hatakeyama clan and the Shiba clan, became a cause of the Onin War.
富子は義政の兄弟の足利義視の次期将軍が決まったいたが実子足利義尚の将軍就任を望み実家の日野家も応援し、足利将軍家の家督相続争いが畠山氏や斯波氏の争いと連動して応仁の乱の一因となる。