In May, 1331, when the Genko Incident by Toshimoto HINO and others occurred, he went up to Kyoto as a senior immediate vassal of the Kamakura bakufu (Japanese feudal government headed by a shogun).
元弘元年（1331年）5月、日野俊基らの元弘の変が起こると、鎌倉幕府の有力御家人として上洛。