A young warrior who was in love with Inuyashaís mother, Izayoi.
To prevent her from bearing the child of a demon, he attempts to kill her and her unborn baby. He dies, with hatred in his heart, battling Inuyashaís father, the great Dog-Demon. He is resurrected by the evil power of the demonic sword, Sounga, and is manipulated to battle the sons of his enemy, Inuyasha and Sesshomaru. Though controlled by the evil sword, deep down he is still a noble warrior.