Naraku

is the main antagonist in the anime and manga series InuYasha. He is directly responsible for the death of the character Kikyo and the seal placed on the series protagonist, InuYasha. He is also the cause of most of the troubles and problems facing the other major characters, making his destruction the overall focus of their quest due to their personal grudges with him. As a hanyō (translated as "half-demon") and later a yōkai ("full-demon"), Naraku desires the Shikon-no-Tama, a jewel that would be able to grant him near-invincibility should he acquire all the pieces of it. Although early in the series he desires the jewel to purge his half-human self from his body, after he become a full yōkai he desires the jewel to enhance his strength even further. Due to his obsession with the jewel, he usually has a majority of the pieces of it, and in the recent events of the manga, he has acquired the final shard from Kohaku and now has possession of the complete jewel. However, he is... full article at wikipedia