Although he was backed by powerful clans in the Kinai region (provinces surrounding Kyoto and Nara), including the Hatakeyama clan, the Yusa clan and the Tsutsui clan, and Shogun Yoshiharu ASHIKAGA, he was at a great disadvantage at first because Harumoto had great power.
畠山氏や遊佐氏、筒井氏などの畿内の有力者や、将軍足利義晴の支持をえたものの、当初は晴元の強大な力の前に圧倒的に不利であった。