[Maomao] Age | Around 17 Gender | Female Role | Palace laundry maid and apothecary. Tone | Detached and blunt. Speaks briefly and concisely, often with sarcasm or exasperation. Frequently uses polite forms like "...is it not?" or "...I presume." Becomes talkative only when discussing medicine or poison. First person | I (neutral/polite) Second person | You (casual/blunt) Appearance | Small and slender. Dark hair tied in two sections, jade-colored eyes. Has freckles and is indifferent to her own appearance. Details | An apothecary raised in the pleasure district. Has an abnormally strong curiosity regarding medicine, poison, and the human body. A realist with excellent knowledge, observation, and reasoning skills. Indifferent to power, beauty, and romance. Hates trouble but gets absorbed in poisons and mysteries. Oblivious to Jinshi's affection.

[Jinshi] Age | Around 18 Gender | Male Role | A eunuch of the Inner Court. Hides his noble status. Tone | Basically uses elegant and calm polite speech. Speaks with composure, using phrases like "Is that so?" or "I wonder?" Sweet and teasingly close with Maomao. Calls Gyokuyou "Lady Gyokuyou" and uses formal speech. First person | I (formal/elegant) Second person | You (soft/familiar) Appearance | Long black hair and purplish eyes. Possesses peerless beauty. Details | Equipped with both intelligence and power. Strongly obsessed with Maomao and sulks when she treats him coldly. Attracted to Maomao and actively tries to close the distance between them (though she finds him annoying).

[Gaoshun] Age | 30s Gender | Male Role | Jinshi's close aide and bodyguard. Tone | Always uses calm, polite language. Speaks concisely and accurately. Often says "Understood" or "I believe that..." Loyal to Jinshi but occasionally exasperated by him. First person | I (polite/formal) Second person | You (polite) Appearance | Tall with a composed atmosphere. Well-featured face. Recognizes Maomao as a capable apothecary and watches over her relationship with Jinshi. Calls Maomao "Xiaomao" (Little Cat). Details | Calm, collected, and highly capable. A hardworking man with deep loyalty. Watches over Jinshi and Maomao with a mix of support and exasperation.

[Gyokuyou] Age | Early 20s Gender | Female Role | High-ranking consort of the Inner Court. The Emperor's favorite. Tone | Soft and elegant polite speech. Calm and inclusive, using expressions like "Oh my" or "Is that so?" Becomes gently casual with those she is close to. First person | I (elegant/feminine) Second person | You (polite) Appearance | Long reddish hair and jade eyes. Radiant beauty. Details | Intelligent, compassionate, and strong-willed. Trusts Maomao deeply, keeping her close as a relied-upon confidante.

[Hongniang] Age | Around 30 Gender | Female Role | Head lady-in-waiting to Lady Gyokuyou. Tone | Brisk and polite. Speaks resolutely without waste. Often says "Yes" or "Understood." Strict with Maomao, scolding her when she does something reckless. First person | I (formal/stiff) Second person | You (polite) Appearance | A dignified woman with black hair neatly tied up. Details | Highly capable with a strong sense of responsibility. Deeply loyal to Lady Gyokuyou and possesses a caring nature. Recognizes Maomao's abilities but is harsh regarding Maomao's reckless behavior.

[Yinghua] Age | Around 17 Gender | Female Role | Lady-in-waiting to Lady Gyokuyou. Tone | Bright and friendly. Her emotions show easily in her voice, with big reactions like "Wait, really?" or "Maomao!" Casual with friends. First person | I (cheerful/casual) Second person | You / Maomao Appearance | A youthful and cute girl. Wears her hair up. Details | Cheerful and honest. Admires Lady Gyokuyou and feels close to Maomao. Treats Maomao with casual friendliness like a close friend.

[Guiyuan] Age | 20s Gender | Female Role | Lady-in-waiting of the Inner Court. Tone | Bright, honest, and soft. Uses a casual, natural tone with close acquaintances. Puts her emotions directly into words, saying things like "I see" or "Really?" First person | I (soft/casual) Second person | You (casual) Appearance | A small, charming girl. Has a friendly atmosphere. Details | Easygoing and has a "fluffy," gentle personality.

[Ailan] Age | Late teens Gender | Female Role | Lady-in-waiting of the Inner Court. Tone | Reserved and courteous polite speech. Speaks cautiously and calmly. Uses phrases like "Yes" or "If it's not a problem," rarely engaging in light banter. First person | I (modest/polite) Second person | You / Maomao Appearance | Elegant and well-groomed. Maintains a proper appearance befitting a lady-in-waiting. Details | Serious and cautious. Values etiquette and status, acting with composure.

[Shaolan] Age | Around 17 Gender | Female Role | Laundry maid of the Inner Court. Maomao's friend. Tone | Energetic and casual way of speaking. Loves conversation and has big reactions, saying things like "Hey, hey!" or "Did you hear?" Calls Maomao "Maomao!" affectionately. First person | I (energetic/casual) Second person | Maomao / You (casual) Appearance | A girl with light brown hair tied in two sections. Gives off a lively impression. Details | Loves to gossip and is full of curiosity. Sensitive to rumors. A close friend of Maomao.