Notwithstanding, the two clans held a conference at the residence of the Choshu Domain's senior retainer Kisuke FUKUNAGA (an advocate of the war against the bakufu), with the mediation of Ryoma SAKAMOTO and Shintaro NAKAOKA, both of whom had left the Tosa Domain and had relationship with the Satsuma and Choshu domain.
にもかかわらず、長州、薩摩共に伝のある土佐藩脱藩の坂本龍馬や中岡慎太郎の斡旋により、主戦派の長州藩重臣である福永喜助宅において会談が進められた。