Nura: Rise of the Yokai Clan - Season 1 - Eps 8: Tragic Umewakamaru!
Gyuki who was known as Umewakamaru while he was human, past is revealed. Umewakamaru is a noble child who excels at everything but after his father dies his mother leaves him at a monastery. News of his mother's illness prompts Umewakamaru to want to see her. On the way he is tricked by demons into going the wrong way. There he finds out his mother has been devoured by the youkai Gyuki. Umewakamaru goes mad with grief and kills the demon Gyuki and in this state he takes to killing other travelers. In time he also comes to be known as Gyuki. It is here that Rikuo's father meets him for the first time and after defeating him in battle requests that he join them as a member of their family.
About Nura: Rise of the Yokai Clan

Title: Nura: Rise of the Yokai Clan
First Air Date: 2010-07-05
Last Air Date: 2011-12-18
Status: Ended
Rating: 7.5/10 (from 84 votes)
Language: JA
Seasons: 3
Total Episodes: 48
Network: Tokyo MX BS11
Genres: Animation, Sci-Fi & Fantasy, Action & Adventure
Production Companies: Studio Deen
Synopsis
Rikuo Nura, is 3 parts human and a quarter Demon, lives in a house of spirits with his grandfather, The current clan head of the Nura youkai. Rikou is set to be the next clan head, despit the fact he dilikes his demon side. He soon come to terms with his demon blood and decides to take his position as young master of the Nura house. However there are those who will certainly not allow it to be easy.
Cast

Jun Fukuyama
Rikuo Nura

Aya Hirano
Kana Ienaga

Ai Maeda
Yura Keikain

Yui Horie
Tsurara Oikawa

Junji Majima
Karasu Tengu

Akira Ishida
Inugamigyobudanuki Tamazuki

Ami Koshimizu
Sasami

Hiro Shimono
Kuroumaru

Hiroki Yasumoto
Aotabo

Hiroyuki Yoshino
Gozumaru