In 1333, he took part in Yoshisada NITTA's taking up arms, and he made remarkable achievements such as taking Kamakura bakufu (Japanese feudal government headed by a shogun) by attacking from Kobukuro-zaka Slope.
元弘3年（1333年）、新田義貞の挙兵に参加し、巨福呂坂（こぶくろざか）から鎌倉を攻略するなど活躍。