Minamoto no Yorimitsu
Seimei is involved in numerous other tales as well. He appears as a minor character in the "Heike Monogatari" and is said to be responsible for divining the location of the Shuten-dōji, a powerful oni purportedly slain by Minamoto no Yorimitsu. He is sometimes said to be the onmyōji who discovered Tamamo-no-Mae's true nature, although the time of the Tamamo-no-Mae story does not coincide with Seimei's lifetime; other sources credit the act to a descendant, Abe no Yasuchika.