Riiya

The best friend of Upas and Senri's father,he had a bear + anima.The day he took Senri into the mountains to hunt,he fought with the mad bear Amurui and killed him.However,when he killed Amurui he went beserk and tried to kill Senri.It was this that caused Senri to earn his bear + anim.Riiya was killed by his own son,and passed his + anima and Amurui's on to him.