When the influence of the Shonai clan on the Shinchogumi increased and the characteristics of the Shinchogumi as a sabaku group (supportive group for the bakufu) became stronger, he left the Shinchogumi.
庄内藩から新徴組への影響が大きくなり、佐幕団体への傾向を強めると新徴組を脱隊する。