When the Battle of Toba-Fushimi broke out as the old army of the bakufu, the troops of the Satsuma clan and the Choshu clan clashed in Kyoto on January 27, 1868, Yoshinobu escaped from Osaka to Edo by a warship not to leave his house.
翌慶応4年（1868年）1月3日に京都で旧幕府軍と薩摩藩、長州藩の兵が衝突して鳥羽伏見の戦いが起こり、慶喜は軍艦で大坂から江戸へ逃亡し謹慎する。