In January, 1368 soon after he became the kubo, the Musashi Hei Ikki no Ran (riot by local clans in Musashi Province) broke out, and he led troops to Kawagoe at the young age of 10.
公方となってすぐの1368年1月に武蔵平一揆の乱が起こるが、10歳という幼少ながらみずから軍勢を率いて河越に出陣。