What is a person willing to do for someone he loves?

Would that person sacrifice their life to protect a loved one? Would this person give up his youth?

Soon a young girl would be faced with that decision.
But would this girl be aware of the implications of his decision?

Follows a story of despair, courage, and love.

Follows the story of a demon and a human.

Follows the story of Sesshoumaru and Rin.