Because of his compliance with the disciplinary confinement and the Bloodless Transfer of Edo-jo Castle, the administrative power was transferred as a result of almost a bloodless revolution; he contributed greatly to the Restoration and ensuring of independency of modern Japan.
恭順謹慎・江戸無血開城などにより、無血革命に近い状態で政権移譲できた事から近代日本の独立性が守られ、維新への功績は大きいと評価された。