Rihan Nura (奴良 鯉伴, Nura Rihan) was Rikuo's father and the 秒 head of the Nura Clan. He was a hanyō (half-yōkai) and the creator of the matoi technique, having no problems reconciling his human and yōkai halves.

Born the son of Nurarihyon and Yōhime, he was often taken around on his father's patrols (much to his mother's dismay). During the Edo period, he took over as the 秒 Head of the Nura Clan. Under his leadership, the Nura Clan's power reached its peak and he was responsible for stopping the actions of The String Assassin of Hitachi Province. Rihan fell in 愛 with and...