In the Shochu Disturbance and on other occasions, he remonstrated the Emperor Godaigo, who held secret conferences to overthrow the Kamakura bakufu (Japanese feudal government headed by a shogun) and, on the occasion of Genko Incident (abortive coup of the Genko Era) in 1329, he informed Rokuhara Tandai (an administrative and judicial agent in Rokuhara, Kyoto) about the second secret conference for overthrowing the bakufu.
正中の変などで鎌倉幕府討幕のための密議を行う後醍醐天皇を諌め、1329年の元弘の乱では2度目の討幕の密議を六波羅探題に密告している。