After Taisei Hokan (transfer of power back to the Emperor) in 1867, Naonori converted the opinion of domain people into the new government side even though he was fudai hitto (head of fudai daimyo.)
慶応3年（1867年）大政奉還の後は譜代筆頭にもかかわらず新政府側に藩論を転向させた。