The former lord of domain Nariaki TOKUGAWA, who was under house arrest, persuaded them that stopping the return of the chokusho is against the Emperor's will, and so the core members escaped to Edo and the group broke up.
謹慎中の前藩主徳川斉昭も「返納の阻止は天意に反する」と説得した為、主だったメンバーが江戸に脱出することで解散した。