Once the news of arson of Satsuma domain residence in Edo was delivered to Osaka Castle on January 22, 1868 by Tomoaki TAKIGAWA, Ometsuke, and Tomogoro ONO, kanjo bugyo-nami (assistant commissioner of finance), the hard-liners in the castle was infuriated.
大目付滝川具挙・勘定奉行並小野友五郎らによって、江戸の薩摩藩邸焼き討ちの報が12月28日大坂城にもたらされると、城内の強硬派が激昂。