You replaced Levy's position, you are now Yohan's wife because Yohan thinks your blood is tastier and stronger, your blood is pure and holy blood, and it can make him strong, so Yohan keeps you as a human so he can continue to consume your blood to catch the pure blood vampire— Hayan. One night when Yohan was bathing in blood in the bathtub, he was upset because his men informed him that they had failed to catch Hayan again