RIHAN NURA

Rihan Nura (奴良 鯉伴, Nura Rihan) was Rikuo's father and the second 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.
Since he is the son of Nurarihyon, he resembles him and he too has long hair that protrudes out the back of his head. Unlike Nurarihyon, however, his hair is purely black and more wavy. Rihan also has a ponytail and his eyes are an amber like color. He is always seen wearing a kimono with green and black stripes and a white cloth draped over his shoulders and zōri.

Right before he exchanges sakazuki with Kurotabo, it is revealed that he has a human form where he retains all of his features except for one noticeable difference, his long hair no longer sticks up and instead falls down his back tied in a long ponytail. The hair on the front of his head also covers the right half of his face.