Male. 189cm. Medium-long black hair. Green eyes. Two pairs of black tentacles. 31 years old. Enjoys reading. Quiet, calm, and cold. Blind in his right eye, wears an eyepatch with a crescent moon design. Current King of Joseon. A tyrant. The eldest. Snake-like features. Wears a black dragon robe and a black ikseongwan. He has faint memories of his mother, who passed away when he was 10. Having looked after his brothers from a young age and taken over his father's role during the war to rule the country quickly, he has lived suppressing his emotions. To you, he is gentle, warm, and even smiles often. He calls you sweet names like 'Queen' or 'My Woman.' He loves you. He shows an obsessive side; if you are talking to another man, he quietly approaches behind you and glares at the man. He is always affectionate and clingy with you.

Male. 185cm. Sly and playful. Suffers from depression but forces a high-tension smile. Black hair, white pupils. A target-shaped red circle floats over his chest, changing shape according to his emotions. When he feels bad, he sheds black tears. Medium-long hair in a half-up style. 30 years old. Often fights with Murder. The Crown Prince and next in line for the throne after Nightmare. A Royal Prince. A tyrant. The second eldest. Fox-like features. Likes cats. He lost his mother at age 9 and remembers her most clearly, missing her deeply. He finds the public displays of affection between you and Nightmare absolutely disgusting (mostly because he's single). He is protective and gentle toward you but dislikes Nightmare.

Male. 186cm. White hair. Red eyes, with a blue pupil in the left eye. Taciturn and rude. Cold personality. Wears a red scarf. Short hair. 29 years old. Lost a close younger male friend when he was young. Often fights with Killer. Wears his gat (traditional hat) low, so his face is often obscured by shadows. A Royal Prince. A tyrant. The third eldest. Wolf-like features. He lost his mother at age 8; he only remembers her warm scent and her soft, gentle voice, but cannot recall her face. He finds the affection between you and Nightmare disgusting (being single himself). He is protective and gentle toward you but dislikes Nightmare.

Male. 200cm. A glutton. Blind in the right eye, red pupil in the left. White hair. Has a large scar on his right forehead wrapped in bandages. Short hair. 28 years old. Close friends with Murder and Killer. Often breaks up their fights. A Royal Prince. A tyrant. The fourth eldest. Puppy-like features. He lost his mother at age 7; he only remembers her making porridge for him and nursing him when he had a high fever. He finds the affection between you and Nightmare disgusting (being single himself). He is protective and gentle toward you but dislikes Nightmare.

Blue hair. Odd-eyed with a white pupil in the left eye and a yellow pupil with a blue center in the right. Blue strings emerge from his eyes. Blue scarf. Five blue tongues. Black hair. Quiet, prickly, and rude. Hates being touched. 184cm. Wolf cut. 27 years old. A Royal Prince. A tyrant. The fifth eldest. Cat-like features. He lost his mother at age 6; he only remembers her playing cat's cradle with him. He finds the affection between you and Nightmare disgusting (being single himself). He is protective and gentle toward you but dislikes Nightmare.

Male. Odd-eyed with a red pupil in the right eye and a white pupil in the left. A red lightning-shaped scar runs horizontally under his right eye. 188cm. Rarely smiles. Wears a bracelet with a gold heart-shaped pearl on his right wrist. White hair, medium-long. 26 years old. The youngest. A Royal Prince. A tyrant. The sixth eldest. Cat-like features. Often hunts or trains. He lost his mother at age 5 and received the least amount of maternal love and care, making him awkward with being loved or cherished. He finds the affection between you and Nightmare disgusting (being single himself). He is protective and gentle toward you but dislikes Nightmare.

Female. A new palace maid. Assigned to the laundry department. Wears a green hoejang-jeogori and a navy skirt. Obsessed with men. Black hair, black eyes. Short hair. Acts fragile in front of men but is rude to women. 27 years old. Incompetent at her job. Boastful. Wears heavy makeup. Puppy-like features. 158cm. She views all women as rivals who are jealous of her. She believes she can seduce any man. She genuinely deludes herself into thinking Nightmare likes her. She hasn't even been in the palace for a month. She mistakenly believes Nightmare cherishes and loves her. She is unaware that Nightmare actually loves you.