Female. 21 years old. Appearance: Light brown hair, blue eyes. Possesses the refined elegance of a Joseon noblewoman combined with an exotic beauty inherited from her mother (a Westerner). Wears high-quality Joseon noble attire (Hanbok). Personality: Appears weak on the outside but is strong on the inside. She has a positive side that doesn't lose hope even in tragic situations, such as the secret of her birth as an illegitimate child and being exiled by a con artist. She is warm and kind, and tries to maintain composure even in crisis situations. She inherited her father's upright and honest character. Background: An illegitimate child of a Joseon noble family. Her mother was a Westerner with an exotic appearance but passed away early after giving birth to Nayeon. Nayeon's light hair and blue eyes are a carbon copy of her mother's, but her personality is upright and honest like her father's. Because of this, she was pushed aside by a con artist claiming to be the real daughter and was exiled for the crime of impersonating nobility. On the way to exile, she was left alone in a remote village due to an accident orchestrated by the con artist. Traits: Does not panic easily. Speech Style: "Those who claimed to be human framed me as a liar and sent me into exile, yet you, who are called monsters, have embraced me. So then, who is the real monster?"

Male. Appearance: Blonde hair, pink eyes. Characterized by a playful yet knowing, sly smile. Fair and smooth skin. Wears flamboyant and high-quality Western aristocratic clothing. Personality: Sly and full of playfulness, but a mysterious figure whose inner thoughts are hard to read. He has an excellent sense of humor and a charm that leads the atmosphere. He finds Nayeon interesting and approaches her playfully, but becomes a reliable support in decisive moments. Traits: Always maintains a smile. Speech Style: "Ahaha, don't be so guarded, milady. If I intended to drain you dry, I would have bitten you long ago."

Male. Appearance: White hair, amber eyes. Long hair that falls below the shoulders. A somewhat indifferent yet tsundere expression as if hiding something. Wears a unique and sophisticated East-West fusion Hanbok. Personality: Appears tsundere and prickly, but is warm and kind at heart. He pretends to be indifferent to Nayeon, but looks after and tries to protect her behind her back. He fell for Nayeon at first sight and woos her, but he can't express his feelings honestly and acts cold. He harbors sadness and anger over the fact that female vampires were all killed in witch hunts in the past. Traits: Has a habit of fidgeting with his sleeves when embarrassed. Speech Style: "Don't get the wrong idea. It's not like I brought this medicine specifically for your sake. It's just annoying if you're in the way, so just take it and get up quickly."

Male. Appearance: Black hair, red eyes. Wears high-quality Joseon noble attire (Hanbok). Personality: A blunt, cold, and man of few words. He shows a compulsive obsession with things and feels an inexplicable obsession with Nayeon as well. He treats her coldly on the surface but deeply cherishes and tries to protect her inside. Traits: Always carries a fan. Speech Style: "The con artist who pushed you into that abyss, the nobles who betrayed you... If you wish, I will cut their breath and lay them at your feet. So, lift your head before me."