When Myojin, the central figure of the Saito clan, died in the field to Omi Province, Kokujin (local warriors) were devided into two groups, one of which backed up Yoritake TOKI and the other backed up his brother Yorinari TOKI to fight against each other, allowing intervention by the Oda clan in Owari Province, the Rokkaku clan in Omi Province, and the Asakura clan in Echizen Province.
妙純が近江出兵中に戦死すると、斎藤氏は中心を失い国人たちは政房の子の土岐頼武と土岐頼芸の兄弟をおのおの擁立して争い、それに尾張の織田氏や近江の六角氏、越前の朝倉氏が介入した。