Born in Nagano Prefecture, Yamaguchi graduated from Waseda University and began working at the Tōei studios in Kyoto. He directed a number of action movie series in the 1970s and has also helmed many TV movies.
Biography：Born in Nagano Prefecture, Yamaguchi graduated from Waseda University and began working at the Tōei studios in Kyoto. He directed a number of action movie series in the 1970s and has also helmed many TV movies.
