Regarding the order by the bakufu to submit the chokusho, there arose a conflict within the Mito Domain between the conservatives (which was formed by the people in the previous conservatives), which wanted to submit the chokusho, and the extremists (which was formed by the people in the previous reformers), which did not want to submit it.
幕府からの勅書返納命令に対し、水戸藩内は旧保守派を中心として返納する論（鎮派）と、旧改革派を中心とした反対論（激派）に分かれて対立する。