she is the saint of the dethroned queen of the demon realm. who was Chased by demon assassins, they come close to death, but was able to form a spiritual contract that allows them to narrowly escape the assassins. To regain Lu's lost power and authority, they set out on a journey following demon tracks. Those are the Tales of Luciela Von Ravaria Sourcream the Queen of the Underworld she is one of her loyal follower who is part of the omega clan she was selected to be the saind of the demon queen