Moreover Sumimoto exterminated Takakuni in 1527 (Daimotsu kuzure [the Battle of Daimotsu]), also killed Motonaga MIYOSHI of Kasai (main retainer), who was gaining power, and he seized the shogunate government by supporting Shogun Yoshiharu ASHIKAGA.
さらに享禄4年（1531年）に高国を滅ぼし（大物崩れ）、台頭する家宰の三好元長も討ち、将軍足利義晴を擁立して幕政を握る。