In the Genko War, he joined the army of bakufu (Japanese feudal government headed by a shogun), and after the fall of Kamakura bakufu, afraid of being charged for this crime, he helped Fujisawa MADENOKOJI, who was exiled to Hitachi Province in the order of the bakufu, to go to the capital and served for the Emperor Godaigo.
元弘の乱では幕府軍に従ったが、鎌倉幕府が滅亡するとその罪を問われることを恐れて、幕命で常陸国に流罪とされていた万里小路藤房を助けて上洛し、後醍醐天皇に仕えた。