Yasumasa Hirai
Yasumasa Hirai is a fictional character from the historical fantasy novel Teito Monogatari by Hiroshi Aramata. He also appears in the prequel novel Teito Gendan
Hirai is the direct descendant of Abe no Seimei and a master Onmyoji. He leads the Tsuchimikado Clan, one of the last royal families of Japan that practiced Onmyōdō. He also serves as a spiritual adviser to the Emperor in Kyoto.