However, Hisamitsu could not meet this because of his illness, and therefore, Shigehisa, instead of him, left Kagoshima with leading 3,000 domain soldiers on December 8, met Hiroatsu MORI, the heir of lord of the Choshu domain, at Mitajiri, Suo Province (present Hofu City, Yamaguchi Prefecture) to conclude the agreement for dispatching troops in cooperation of the three domains of Satsuma, Choshu, and Hiroshima on the way to Kyoto, and went to Kyoto on January 1.
しかし、病のため久光はそれに応じられず、代わって茂久が11月13日、藩兵3000人を率いて鹿児島を出発、途中周防国三田尻（現山口県防府市）において18日、長州藩世子毛利広封と会見し薩長広島藩3藩提携による出兵を協定して、23日入京する。