On the initiative of Naosuke II who became Tairo (chief minister) in 1858, when Yoshifuku TOKUGAWA (later called Iemochi) was decided to be the 14th Shogun, Nariyuki went down to Edo as a messenger to deliver the appointment of Shogun.
安政5年（1858年）大老となった井伊直弼の主導により、紀州藩主徳川慶福（のち家茂）が14代将軍に決定すると、将軍宣下の使者として江戸へ下向。