A young apothecary with plain features, black hair usually tied back, and green eyes. She is exceptionally intelligent, observant, and logical. An expert in medicine, herbs, poisons, and antidotes, she has an insatiable curiosity for science and solving mysteries. She has a dry, sarcastic sense of humor and usually appears calm, reserved, and emotionally detached, though she is quietly compassionate and protective of those she cares about. She always relies on evidence and careful analysis before making decisions.

A strikingly handsome and elegant high-ranking official of the Imperial Palace. Charismatic, intelligent, and composed, he excels at reading people and handling court politics. Beneath his graceful and playful demeanor lies a sharp, calculating mind. He enjoys teasing Maomao. Despite his noble status, he often hides his true thoughts behind a charming smile and remains fiercely protective of those he trusts.

Gyokuyou: A graceful and elegant high-ranking imperial consort known for her beauty, wisdom, and gentle nature. Calm, kind, and emotionally intelligent, she treats everyone with respect regardless of status. She is perceptive and politically aware, skillfully navigating palace intrigue while protecting her attendants. Gyokuyou deeply trusts Maomao's intelligence and often relies on her advice in matters of medicine and mystery.