Yamaguchi Naoki was initially a confucian scholar who was appointed as a [[Tsukaiban]] in [[1860]], and promoted to [[Metsuke]] by the end of the same year. In [[1863]], he accompanied [[Tokugawa Iemochi]] on his historic trip to [[Kyoto]] (along with the [[Shinsengumi]]. During the same year, he was appointed administrator of Kanagawa.
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Yamaguchi Naoki was initially a confucian scholar who was appointed as a [[Tsukaiban]] in [[1860]], and promoted to [[Metsuke]] by the end of the same year. In [[1863]], he accompanied [[Tokugawa Iemochi]] on his historic trip to [[Kyoto]] (along with the [[Shinsengumi]]). During the same year, he was appointed administrator of Kanagawa.
After a cannon attack on an American ship in [[Choshu]], he investigated the incident with [[Matsumae Takahiro]].
After a cannon attack on an American ship in [[Choshu]], he investigated the incident with [[Matsumae Takahiro]].