Kikyō

Kikyō (桔梗, "Chinese Bellflower") was a shrine priestess who lived 50 years prior to the main events of the series. She was responsible for purifying the Shikon Jewel and was the former lover of Inuyasha. After being deceived and fatally injured by the half-demon Naraku, Kikyō bound Inuyasha to the Sacred Tree with a sacred arrow and sacrificed her own life to keep the Jewel from returning to the realm of the living. Shortly after the Jewel was brought back to the Feudal Era, Kikyō was resurrected by the demon ogress Urasue. After learning of the circumstances of her death, she resolved to destroy Naraku and to purge the Shikon Jewel from the world.