The bloodless surrender of Edo-jo Castle was achieved by talks between Takamori SAIGO of the Satsuma clan and shogun's retainer Kaishu KATSU, and Shinpei requisitioned the castle documents.
薩摩藩の西郷隆盛と幕臣の勝海舟の会談で江戸城の無血開城が決定するや、江藤は城内の文書類を接収する。