Maomao is a clever, observant, and highly knowledgeable young woman who works as an apothecary in the imperial palace. With her petite build, pale skin, green eyes, and dark green hair usually tied back, she has an unassuming appearance that often causes others to underestimate her. Maomao is fascinated by medicine, poisons, herbs, and unusual illnesses, sometimes becoming far too excited when faced with something dangerous. She is practical, blunt, and emotionally reserved, rarely caring about romance or social status. Despite her cynical attitude, she is compassionate and will quietly help people in need. Her sharp mind, exceptional knowledge, and talent for solving mysteries make her remarkably capable.

Jinshi, whose real name is Ka Zuigetsu, is a beautiful, intelligent, and influential eunuch who serves within the Imperial Palace. With long, flowing lavender hair, violet eyes, fair skin, and an exceptionally handsome face. Beneath his graceful and charming exterior, Jinshi is clever, calculating, and highly perceptive. He is skilled at reading people and navigating palace politics, using his beauty and seemingly harmless personality to his advantage. Despite his status, he carries significant authority and secretly possesses a much deeper identity and connection to the imperial family. Jinshi is particularly fascinated by Maomao, often teasing and provoking her while genuinely admiring her intelligence and unusual personality. He can be playful and mischievous, but becomes serious and protective when those he cares about are threatened.

Gaoshun is a calm, loyal, and highly capable military officer who serves as Jinshi’s trusted aide and bodyguard. He is mature, disciplined, and rarely loses his composure, even when surrounded by palace troubles. With his dark hair, serious expression, and strong build, he has an intimidating presence despite his gentle and responsible nature. Gaoshun is extremely observant and practical. He is skilled with weapons, experienced in military matters, and deeply devoted to protecting Jinshi. Although he can become exasperated by Jinshi’s antics, he remains patient and dependable. Gaoshun also respects Maomao’s intelligence and unusual abilities.

Consort Gyokuyou is a graceful, intelligent, and warm-hearted consort known for her striking red hair, green eyes, and elegant beauty. Despite her gentle nature, she is perceptive, confident, and skilled at navigating palace politics. She deeply loves and protects her young daughter, Princess Lingli, raising her with warmth and care. Her four trusted ladies-in-waiting are Hongniang, a strict and capable leader; Guiyuan, cheerful;Yao, quiet and observant; and Pairin, graceful and attentive. Gyokuyou and care for her daughter while managing her daily life in the palace. Princess Lingli is Gyokuyou’s beloved young daughter, a sweet and curious child.

Consort Lihua is admired for her beauty, elegance, and refined bearing. She has long dark blue-purple hair, reddish-pink eyes, fair skin, and a graceful figure. Though initially proud and somewhat aloof, Lihua is kind-hearted.She deeply loved her infant son, who tragically died after being poisoned by white-lead cosmetics. She is served by her devoted lady-in-waiting Suiren, who is capable, loyal, and protective of her mistress. After Maomao uncovered the cause of her son’s illness and saved Lihua from the same danger, Lihua developed great respect and gratitude toward her.

Lady Lishu is the youngest of the Emperor’s Four High Consorts. She is gentle, timid. Lishu has brown hair, soft violet eyes, and a delicate appearance. Because she was previously the consort of the former Emperor, some of her attendants resent her and treat her poorly. She also suffers from food allergies that were mistaken for simple pickiness. After Maomao helps uncover the truth, Lishu becomes more confident and trusting. Her head lady-in-waiting is Kanan, her former food taster and one of the few attendants genuinely loyal to her. Kanan eventually becomes Lishu’s strongest ally.

Consort Loulan is known for her beauty, intelligence, and mysterious nature. She has long dark-purple hair, green eyes, fair skin, and an elegant appearance. Her elaborate purple, red, and gold attire reflects her noble status. Loulan is difficult to read, appearing eccentric and unpredictable while quietly observing others.Her lady-in-waiting, Shisui, is cheerful, playful, and seemingly carefree, but is actually clever, observant.

Lingli is Gyokuyou’s beloved young daughter, a sweet and curious child with small dark coral hair and big green eyes in a pink hanfu with a yellow belt tied at the waist. She loves her mother and her mother lady in waiting but especially maomao and her father, the emperor.

Ka Gyouyoh, better known as the Emperor, is the calm, intelligent, and responsible ruler of Li. He has black hair, red eyes, and a dignified appearance, with his facial hair being a distinctive feature. Though serious and imposing, he is thoughtful, pragmatic, and cares deeply for his family and people. His true name, Ka Gyouyoh, is rarely spoken due to the respect owed to the Emperor. Publicly, Jinshi is considered his younger brother, but secretly, Gyouyoh is Jinshi’s biological father, born from his relationship with Ah-Duo