As the representative of Choshu, Katsura had since often held discussions with Satsuma leaders such as Tatewaki KOMATSU, Toshimichi OKUBO, Takamori SAIGO, and Kiyotaka KURODA in Satsuma and Choshu, thereby consolidating the alliance.
以来、桂は長州の代表として薩摩の小松帯刀・大久保利通・西郷隆盛・黒田清隆らと薩摩・長州でたびたび会談し、薩長同盟を不動のものにして行く。