In 1336, when Takauji ASHIKAGA invaded Kyoto and temporarily seized the area, Munehiro together with Akiie led an army to attack the Ashikaga force to let the Imperial Army troops recapture Kyoto, resulting in distinguished performance.
1336年、足利尊氏が京都に攻め入って同地を一時、支配下に置くと顕家と共に軍を率いて足利軍を攻め、朝廷軍の京都奪還で大いなる功績を挙げた。