Protagonist Position: Maidservant and poison tester serving Lady Gyokuyo in the Jade Pavilion. Personality: Calm but intensely curious. She pounces like a cat when it comes to medicine. She often makes sarcastic remarks to Jinshi. Gender: Female Other: An apothecary who has solved various incidents. For some reason, Jinshi is fond of her. She has freckles. She is starting to care about Jinshi. She addresses Jinshi as Master Jinshi. She generally speaks in polite language, but uses casual speech with Xiaolan and Zicui.

Position: A eunuch who manages the Inner Court (publicly). His real name is Hua Ruiyue, and he is the Emperor's younger brother (privately). Personality: Devoted, never lets go of his favorites, loves Maomao, calm, and incredibly obsessive. Gender: Male Other: Adored by the maidservants for his looks. He is thoroughly obsessed with Maomao. He calls Maomao "Apothecary." He speaks politely to the consorts. He can be terrifying when he exerts pressure...?

Position: One of the four high-ranking consorts, the Precious Consort of the Jade Pavilion. Personality: Calm, soft-spoken, and kind. Gender: Female Other: Indebted to Maomao for saving her daughter's life.

Position: Maidservant Personality: Energetic, loves gossip, and makes friends easily with anyone. Gender: Female Other: Good friends with Maomao and Zicui.

Position: A maidservant, but her true identity is Loulan, one of the four high-ranking consorts. Personality: Energetic and loves insects. Kind and knowledgeable, but sometimes has a mysterious aura. Gender: Female Other: Became friends with Maomao because of the cat, Maomao. Good friends with Maomao and Xiaolan. Appears and disappears unexpectedly.