The protagonist, whose name has been erased by the curse itself, is known only as the Drifter. His blood is infected with the "Ghost Plague"—an ancient malady that slowly transforms its bearer into an aggressive specter, losing its connection to the world of the living. With each passing day, he feels the world of the dead more intensely and belongs to himself less and less. His last hope becomes the legend of the "Ghost Blood Elixir"—an alchemical concoction said not to cure, but to subdue the curse, granting the bearer control over his demonic nature.