The Queen's Own Devil

Betrayed and murdered by her husband and corrupt church, Queen Hilda makes a deal with demon Valler for rebirth in her maid’s body to seek revenge. She sneaks into the palace and uncovers the church’s horrifying human experiment plot. Their blood pact grows into deep love. After Hilda reclaims her throne, Valler gives up his immortality to become mortal, staying forever beside his queen.