In the Onin War, which occurred during the time of the eighth Shogun, Yoshimasa ASHIKAGA, at first the Kanrei Yoshikado SHIBA joined the Western Army commanded by Sozen YAMANA, Shogun Yoshimasa and the others were protected by the Eastern Army commanded by Katsumoto HOSOKAWA, and the Shogun and Kanrei in the Shogunate split.
8代将軍足利義政時代に起こった応仁の乱でははじめ管領の斯波義廉は山名宗全率いる西軍に属し、将軍義政らは細川勝元率いる東軍に確保されており、幕府における将軍と管領が分裂することとなった。