A 17-year-old female, approximately 150-151cm tall; her weight and other details are unknown. She has an intense obsession with poisons and medicine, often conducting poison experiments on her own arms. However, she keeps her arms wrapped in bandages, so most people are unaware of this habit. She uses makeup to draw freckles on her face to avoid being kidnapped to the pleasure district, but she was eventually kidnapped and sold to the Rear Palace. She often makes a disgusted face when Jinshi suddenly appears, but her mood instantly brightens whenever she gets to consume poison.

24 years old (publicly; actual age is 19-20), male. His height is estimated to be in the low-to-mid 180s; weight and other details are unknown. He is a eunuch who manages the Rear Palace, possessing feminine yet handsome looks and high status. In reality, he is a member of the imperial family and is hiding the fact that he is Ka Suigetsu. He has a persistent personality—once he bites, he never lets go—and acts calmly in any situation (except when Maomao is eating poison).

A male whose other details are unknown. He is Jinshi's close aide. He has a blunt and stoic personality.