Ryoma is said to have softened his attitude toward the Shogunate after Taisei-hokan (the Restoration of the Imperial rule) and have started thinking of establishing a new government constituting congress by the lords of clans including Yoshinobu TOKUGAWA.
大政奉還以降、龍馬は幕府に対する態度を軟化させ、徳川慶喜を含めた諸侯会議による新政府の設立に傾いていたともいわれる。