However, the Akamatsu clan which rapidly gained power under Muromachi bakufu was interfered by the Reign of Terror and the Soryo system carried out by Yoshimasa Ashikaga and eventually started the Kakitsu coup.
しかし室町幕府のもとで飛躍的に勢力を拡大した赤松氏も、足利義教の行った恐怖政治と惣領制への干渉を受け、やがて嘉吉の乱を起こした。