In December of the same year,he went into Kyoto by sea along with some 700 people in the spearhead convoy of the expeditionary force to the east, which was under Takumi MOURI, governor of all the army, ordered by the lord of domain Takachika MORI, who had been requested by the Satsuma Domain to dispatch the troops for the movement to overthrow the Shogunate.
同年11月、薩摩藩から倒幕運動の出兵要請を受けた藩主毛利敬親の命令で、全軍総督である毛利内匠の東征軍先鋒隊700人余とともに海路で京都に入った。