In 1335, when Takauji ASHIKAGA opposed against the Emperor Godaigo, Taketoshi attacked Sadatsune SHONI who supported the Ashikaga side in his province, and although he suffered in the battle, he was able to defeat him.
1335年、足利尊氏が後醍醐天皇に反逆したとき、武敏は本国にあって足利側に与した少弐貞経を攻め、苦戦したもののこれを破った。