Thereafter, working alongside Imperial Prince Asahiko, Nariyuki assisted Emperor Komei, settling the various critical affairs of States including the decision concerning the Choshu clan, issues related to the charter treaty and the matter of Yoshinobu TOKUGAWA's succession to the head of the Tokugawa family, played a key role as a pro-shogunate noble.
以後、朝彦親王と並んで孝明天皇を補佐し、長州処分問題、条約勅許問題、徳川慶喜の徳川宗家相続問題などの重要な政務を取り仕切り、親幕派公卿として活躍。