In the meantime there occurred a coup d'etat by Zokuron-to, a pro-Bakufu power, and opinions within the clan temporarily shifted to pro-Bakufu; but Zokuron-to was defeated by Kihei-tai (奇兵隊) led by Shinsaku TAKASUGI, and the opinion of the clan again shifted toward the Tobaku movement.
この間、俗論党という佐幕派勢力によるクーデターも起き、藩論は一時佐幕に傾いた事もあるが、高杉晋作率いる奇兵隊によって俗論党政権は掃討され、再度藩論は倒幕に動くこととなった。