In the Onin War, however, he took Sozen YAMANA's side, West Squad, in order to recover Wakasa Province and Mikawa Province, which previously were fiefs for shugo, and therefore, he dismissed all shugoshiki (post of provincial constable) for fiefs by Yoshimasa wno supported the East Squad.
しかし、応仁の乱では旧守護国若狭・三河を復旧するため、西軍山名宗全に味方したため、東軍を支持する義政により全ての領国の守護職を解かれる。