Furthermore the Muromachi bakufu, which was a coalition government of shugo daimyos based on a consultative principle, had provided no solid basis for the Shogun's power since its very beginning except under the rule of the Third Shogun Yoshimitsu ASHIKAGA and the Sixth Shogun Yoshinori ASHIKAGA, and shugo daimyos were under the strong influences of emerging shugodais and their key vassals.
また、守護大名による合議制の連合政権であった室町幕府は、3代将軍足利義満と6代将軍足利義教のときを除いて、成立当初から将軍の権力基盤は脆弱であり、同じように守護大名も台頭する守護代や有力家臣の強い影響を受けていた。