When Takauji ASHIKAGA led a rebellion against the Kamakura bakufu in Shinomura Hachiman-gu Shrine, Tanba Province (Kameoka City, Kyoto Prefecture) and sent the reminder of troops to some provinces in April 1333, Sukekage promptly hastened to join as a member of the Ashikaga army to capture Rokuhara Tandai (an administrative and judicial agency in Rokuhara, Kyoto).
元弘3年（1333年）4月、足利尊氏（後の尊氏）が丹波国篠村八幡宮（京都府亀岡市）で鎌倉幕府へ反旗を翻し、諸国に軍勢催促状を発すると、祐景はこれにいち早く馳せ参じ、足利軍の一員として六波羅探題を攻め落とす。