My Hired Bodyguard Is the Original Vampire

Isabella, heir to the Sterling family, dumps her bodyguard Louis, whom she had kept for three years, only to catch her fiancé Carl cheating with her illegitimate half-sister. After breaking off the engagement, Louis forcibly becomes her blood banquet escort in a maddened, unhinged manner. At the blood banquet, when Isabella's offering is destroyed and she is forced to slit her wrist, her rare bloodline triggers the bloodlust of every vampire present. At the critical moment, L