Backed up by the clout of her guardian Sozen YAMANA and her parents' family of Hinos, Tomiko endorsed Yoshihisa as the next shogun, which inevitably caused a conflict with Yoshimi over the shogunate succession, and this, coupled with the problem between the Shibas and Hatakeyamas over the succession of the family headship, contributed to the Onin War.
富子は後見の山名宗全や実家である日野家の権威を背景に、義尚を次期将軍に推し、将軍職継承をめぐっての義視との対立や斯波氏、畠山氏の家督相続問題が連携して応仁の乱の一因となった。