Serenity De Killer Alexander was forced to be raised by her uncle in the human world. Her mother wants Serenity to be protected from the immortal creatures who are after her blood.    Her blood is a mixture of several clans: a devil and a goddess from her mother, a werewolf from her father, and an angel from her grandmother, giving her extraordinary powers.   This power was sealed so that it could not be smelled by other immortals.    The girl was born as a calm light. Where there is light, there must be shadow. A darkness waiting for the right time creates a role to kill serenity.   Serenity always felt that someone was watching her; she had felt it since she was little, but Serenity didn't tell anyone, not even her parents.   Eventually, Serenity met the figure who always watched over her while she slept. Kenric Alden De Valdimir is the demon ruler of the immortal world.   "My Queen."