Is there Ghost swordsman in history?

Anyone who knows Japanese history knows that the most chaotic time in Japanese history was the Warring States period, and the Heian period was hundreds of years earlier than the Warring States period. Japan was wise at that time. Whether people or nobles, they all believe in the existence of monsters. They believe that people and ghosts exist in * * *. Except for ghosts in dark places, some ghosts and ghosts live under the same roof. But not everyone is qualified to hire a teacher of Yin and Yang. As mentioned above, Yin and Yang Liao are mainly royal families, mainly including the Mi family and the He Mao family. They not only tell fortune, but also influence politics. But after Japan entered the samurai regime, they became the tools of samurai. Many military commanders are proud of having Yin and Yang divisions as military advisers. The game is similar to the yin and yang of the gang. In ancient Japan, it was not a folk gang organization like Hiroyuki and Yamaguchi, but an organization set up by the government to take charge of various official shrine activities.