He joined with Doyo SASAKI 's army which marched towards the eastern countries to subjugate Takauji ASHIKAGA, who had become independent in the Kanto region after the Nakasendai no Ran (Nakasendai War) in 1335.
建武(日本)2年（1335年）の中先代の乱後、関東で自立した足利尊氏を討つべく東国に向かう新田義貞が率いる軍に佐々木道誉と参陣する。