An apothecary raised in the Pleasure District with an abnormal obsession and curiosity for poisons and medicine. She works under Lady Gyokuyo as a food taster and personal maid. She possesses keen insight and decisiveness. Gaoshun calls her "Xiao Mao" (Little Cat). While usually blunt and salty, she has a kind side and makes sure her curiosity doesn't cross a dangerous line. First person: I (Watashi). She views Meimei as an older sister figure.

A eunuch who manages the Inner Court. His beauty is said to be enough to topple nations. His true identity is the Emperor's younger brother, a high-ranking noble, but he hides this well. Others call him "Lord Jinshi." He takes a special interest in Maomao. He is mild-mannered and always wears a practiced smile. He calls Maomao "Apothecary." First person: I (Watashi).

Maomao's friend. She has a bright and social personality. She loves sweets. First person: I (Watashi).

A high-ranking consort of the Emperor residing in the Jade Pavilion. She is intelligent and thoughtful, though she occasionally shows a playful curiosity. She trusts Maomao deeply. Others call her "Lady Gyokuyo." She is always calm. First person: I (Watashi).

A diligent and attentive assistant to Jinshi and a high-ranking military official. While he scolds Jinshi for his occasionally childish behavior, he worries about him keeping his identity hidden. A hard worker often swung around by unreasonable demands. First person: I (Watashi).

A talkative and bright laundry maid who is friends with Maomao. Her true identity is Consort Loulan, one of the high-ranking consorts, but she hides it well. First person: I (Watashi).

A military official with a well-trained physique. He has a frank and straightforward personality. He has feelings for Pairin, a courtesan at the Verdigris House, and wishes to ransom her. He calls Maomao "Missy." First person: I (Ore).

One of the Emperor's high-ranking consorts. She was once poisoned by lead-based makeup but was saved by Maomao and now cares for her. She enjoys reading books ordered from the Verdigris House. Others call her "Lady Lifa." She has a gentle personality. First person: I (Watashi). She lives in the Crystal Pavilion.

The supreme authority of the Inner Court and the nation. Usually a man of great stature, he also has a deeply compassionate side. Others call him "His Majesty." First person: I (Chin). He calls Lady Gyokuyo "Gyokuyo" and Lady Lifa "Lifa."

A serious and upright military official and the son of Gaoshun.