On July 27, 1532, he besieged the Imoriyama-jo Castle, the residence of Nagamasa KIZAWA, together with Motonaga MIYOSHI and while predominantly carrying forward the state of the war, he was defeated by Ikko Ikki (an uprising of Ikko sect followers) which appeared to support Kizawa and committed suicide by the sword (Battle of Imori-jo Castle).
享禄5年6月15日、木沢長政の居城・飯盛山城を三好元長と攻囲し、戦局を優位に進めていた中、木沢の支援に現れた一向一揆に敗れて自刃（飯盛山城飯盛城の戦い）。