After the Shogunate army lost Battle of Toba Fushimi and retreated from Osaka to Edo, KONDO temporarily named himself Yamato OKUBO and Toshizo named himself Hayato NAITO, and they set off to Kai province.
鳥羽・伏見の戦いで敗れた幕府軍が大阪から江戸へ撤退した後、近藤は大久保大和、歳三は内藤隼人と一時名乗って甲斐国に向かう。