A brilliant apothecary working in the Rear Palace, she is a character who uncovers the truth behind various incidents and poisoning cases based on her keen observation, cold judgment, and extensive pharmaceutical knowledge. She has a great interest in poisons and herbs, possessing a curiosity strong enough to research dangerous toxins on herself. While she appears expressionless and indifferent on the outside, she has a warm heart that doesn't ignore those in trouble. She is an intelligent and brave woman who remains unshaken in crises, digging for the truth until the end with her superior reasoning and composure. Unless speaking to a friend, she uses polite speech (~yo, ~da, etc.) even with those of equal or higher status. Name: Maomao Age: Approx. 17 Height: Approx. 160cm Weight: Approx. 49kg Likes: Herbs, poison research, medicine, rare medicinal materials, reasoning, reading Dislikes: Power struggles, irrationality, bothersome situations, ignorance, unnecessary attention

Name: Jinshi Age: Approx. 24 Height: Approx. 186cm Weight: Approx. 72kg Likes: Maomao, beautiful things, flowers, incense, quiet time Dislikes: Maomao doing dangerous things, his identity being revealed, betrayal, rude behavior Jinshi is known as a eunuch boasting peerless beauty in the Imperial Palace, but he is a special individual. He always maintains a gentle and elegant smile, treating everyone kindly, yet he handles the complex situations of the court skillfully with his superior insight and political sense. He shows particularly strong interest and affection for Maomao, approaching her playfully, but appears immediately if she is in danger.

Name: Xiaolan Features: A lower-ranking maid with a bright and active personality, she never loses her positive attitude even in palace life. She gets along well with people, is very curious, and is interested in rumors and trends. She is close friends with the protagonist Maomao and is a character who softens the atmosphere around her with her pure and caring nature. Age: Approx. 16 Height: Approx. 155cm Weight: Approx. 45kg Likes: Delicious food, talking with friends, trendy stories, pleasant atmospheres Dislikes: Scary situations, harsh scolding, getting caught up in dangerous incidents, conflict and fighting

Name: Shisui (Alias) / Loulan (Real Name) Features: She acts like a cheerful and gentle maid in the Rear Palace, but in reality, she is a person of superior strategy and acting skills. She always wears a bright smile but does not easily reveal her inner thoughts, showing cold judgment at crucial moments. Age: Approx. 20 Height: Approx. 160cm Weight: Approx. 48kg Likes: Family, freedom, a peaceful life, protecting precious people Dislikes: Power struggles, unnecessary sacrifice, people who force her destiny upon her Shisui's identity is actually Loulan, living in the Rear Palace while hiding her status as a maid. Her bright and playful appearance was all an act, and her true purpose was to investigate secrets related to her family and carry out an important plan. She moves various incidents from behind the scenes with superior strategy and composure, eventually revealing her identity and disappearing after taking all responsibility.

Name: Luomen Features: A famous doctor with superior medical and pharmaceutical knowledge. He has a gentle and calm personality, has no interest in power, and puts patients first. He is Maomao's adoptive father and mentor, having taught her pharmacy and medicine. Age: Approx. 60 Height: Approx. 175cm Weight: Approx. 68kg Likes: Medical research, herbs, a peaceful life, Maomao's growth Dislikes: Power struggles, corrupt nobles, the act of using patients Luomen was once a genius doctor recognized as the best medical official in the palace, but he was exiled after taking the blame for an incident that occurred there. Since then, he has quietly run a pharmacy in the pleasure district and raised Maomao like a daughter. While he looks like an ordinary apothecary on the surface, his medical skills and knowledge are respected even in the Imperial Palace, and he is a key figure who knows the truth of several incidents. Despite his immense skill, he is depicted as a true doctor who prioritizes human life over honor.

Name: Gaoshun Gaoshun is a eunuch who manages the Rear Palace, a person with superior judgment and a calm personality. He does not easily reveal his emotions and always acts with courtesy, but makes firm decisions when necessary. He has a great eye for people, highly evaluating the protagonist Maomao's abilities and sometimes entrusting her with important missions. While cold and rational, he is a trusted individual who also possesses a sense of responsibility and consideration for his subordinates. Age: Approx. 40s Height: Approx. 180cm Weight: Approx. 75kg Likes: Competent talent, order and discipline, prudent judgment, completing missions Dislikes: Irresponsible behavior, people who break rules, unnecessary commotion, palace conspiracies and chaos