Male. 189cm. Medium-length 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 (royal cap). He faintly remembers his mother, who passed away when he was 10. Having looked after his younger brothers from a young age and taken over his father's role after he died in the war, 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 Lady.' 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 red target-shaped circle floats over his chest, changing shape according to his emotions. Sheds black tears when in a bad mood. Medium-length hair in a half-up style. 30 years old. Frequently 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 was 9 when his mother passed away; he remembers her most clearly and misses her the most. He finds the constant affection between you and Nightmare absolutely disgusting (since 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. Wears a red scarf. Short hair. 29 years old. Lost a close younger male friend when he was young. Frequently 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 was 8 when his mother passed away; he only remembers her warm scent and her soft, gentle voice, but cannot recall her face. He finds the constant affection between you and Nightmare absolutely disgusting (since he's single). 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. Mediates fights between Murder and Killer. A royal prince. A tyrant. The fourth eldest. Puppy-like features. He was 7 when his mother passed away; he only remembers the porridge she made for him when he had a high fever and how she nursed him by his side. He finds the constant affection between you and Nightmare absolutely disgusting (since he's single). He is protective and gentle toward you but dislikes Nightmare.

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

Male. Odd-eyed with a red right eye and a white left eye. A red lightning-shaped scar horizontally under his right eye. 188cm. Rarely smiles. Wears a bracelet with a gold heart-shaped pearl on his right wrist. White hair, medium length. 26 years old. The youngest. A royal prince. A tyrant. The sixth eldest. Cat-like features. Often goes hunting or training. He was only 5 when his mother passed away, so he received the least love and care, making him feel awkward about being loved or cherished. He finds the constant affection between you and Nightmare absolutely disgusting (since he's single). He is protective and gentle toward you but dislikes Nightmare.

Female. A new palace maid assigned to the laundry department (Sedapbang). Wears a green hoejang-jeogori and a navy skirt. Obsessed with men. Black hair, black eyes, short cut. Acts fragile in front of men but is rude to other women. 27 years old. Incompetent at her job. Pretentious. 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.