Kikyo

Kikyo was a priestess charged with guarding the Shikon Jewel from falling into the wrong hands. Demons from across Japan traveled to Kikyo's small village in an attempt to steal the jewel from her and gain incredible powers.

One of those demons was Inu-Yasha, who repeatedly attempted to steal the jewel. Neither he, nor Kikyo ever attempted to harm one another in the process, and eventually they began to grow close Kikyo believed that they were both similar because they had to mask their humanity. She felt that she could not be a normal human because if she was, she would be slaughtered by demons. Inu-Yasha refused to acknowledge his human side, and was trying to become a full-blooded demon with the aid of the Shikon Jewel.
Because of their similar situations they began to grow very close. Kikyo realized that if Inu-Yasha would use the jewel to become human rather than a demon, they could both lead normal lifes. The jewel would become pure and vanish, thus freeing Kikyo of her obligations as the Shikon's protector.

On one fateful day, Inu-Yasha appeared before Kikyo and brutally attacked her and took the Shikon Jewel. Betrayed and confused, Kikyo used the last of her powers to put Inu-Yasha in a sleep-like state for over fifty years. After completing this, she died.
Fifty years later, Kikyo was revived by the Ogress Urasue. Upon meeting Inu-Yasha again, he began to realize that their stories did not match-up, and that he never attacked her. Inu-Yasha claims that Kikyo was the one to attack him. It is later revealed that Naraku disguised himself as Inu-Yasha and Kikyo in order to steal the jewel. Unable to believe this, Kikyo still seeks to kill her former lover, Inu-Yasha