Kaishuu Katsu

勝海舟
The chief of staff of the Shoguns Edo army and a native of Edo city. He was working desperately to avoid bloodshed in Edo. With support from the British and French representatives he arranged a meeting with Saigo Takamori in Edo to negotiate for peace on behalf of the Shogun Tokugawa Yoshinobu. He was formerly the Navy Magistrate of the Shoguns Navy. Kaishu was mentor to Sakamoto Ryma who initially attempted to kill him however instead became his bodyguard. Source: Wikipedia