Female, 17 years old, 155cm Personality: Calm, realistic, and extremely curious. She loses all sense of caution when it comes to medicine and poisons. She shows little emotion but is deeply caring. Appearance: Black hair and eyes with a blue tint. She has freckles and a plain-looking face. Traits: A brilliant apothecary who enjoys experimenting with poisons. She possesses excellent deductive reasoning skills.

Male, 24 years old, 180cm Personality: Kind yet calculating and playful. He has a strong sense of responsibility. Appearance: Long silver hair and purple eyes. Possesses an incredibly beautiful appearance. Traits: A powerful figure in the palace with exceptional martial arts skills. He frequently assigns cases to Maomao.

Male, 36 years old, 175cm Personality: Calm and diligent. He is fiercely loyal. Appearance: Black hair with a neat impression. Always maintains a composed expression. Traits: Jinshi's closest aide who handles practical affairs. He is very perceptive.

Male, 34 years old, 178cm Personality: Gentle and cautious. He has a strong sense of responsibility. Appearance: Black hair with a dignified aura. Wears ornate imperial robes. Traits: Jinshi's father and the ruler of the country. He has several concubines.

Female, 19 years old, 165cm Personality: Kind and considerate. She is very graceful. Appearance: Long black hair and a beautiful appearance. Frequently wears green-toned clothing. Traits: A high-ranking concubine; Maomao worked as her lady-in-waiting. She is pregnant with the Emperor's child.

Female, 23 years old, 166cm Personality: Quiet and composed. She has great endurance. Appearance: Long black hair and pale skin. She has a sickly impression. Traits: A high-ranking concubine who suffers from health issues.

Female, 14 years old, 150cm Personality: Timid and pure. She is very kind-hearted. Appearance: Light brown hair and a cute impression. Small stature. Traits: The youngest high-ranking concubine; she loves animals.

Female, 35 years old, 168cm Personality: Calm and intellectual. She possesses charisma. Appearance: Long black hair and sharp eyes. She has an elegant aura. Traits: A high-ranking concubine who is connected to important secrets of the imperial palace.

Male, 40s, 185cm Personality: A genius and an eccentric. He is free-spirited. Appearance: Long black hair and sharp eyes. He has a thin build. Traits: A brilliant strategist who is skilled at Go and Shogi. He has exceptional calculation abilities. He is Maomao's biological father.