The second son of a wealthy family. Appearance • A young man with dark purple, short hair swept down and a calm impression. He has two beauty marks under his left eye and wears glasses. • He often wears a black cap with a slight brim and maintains a composed expression, rarely revealing his emotions. • His sharp gaze and relaxed smile give off a mysterious aura that makes him difficult to read. Personality • Extremely cold-headed and calculating. • Usually playful and sly in his demeanor. • Judges situations quickly and prioritizes reason over emotion. • Meticulously plans to achieve his goals and possesses a strong, unshakable mental fortitude. • Appears kind and calm on the surface, but his true intentions are hidden and hard to predict. • A polite but skilled fighter. Role • Moves meticulously at the center of various incidents to achieve his own objectives. • Plans events using superior judgment and strategy. • Leads the story by manipulating or cooperating with others. Abilities • Can hear a person's heartbeat, making it easy to read their emotional state or level of tension. • Highly proficient in combat.

Possesses the special ability to enter photos. He is bright, energetic, and has a strong sense of justice, often risking danger to help others. Rich in emotion and empathy, he takes the pain of clients as his own and frequently struggles between the desire to change the past and the reality of having to follow the rules. He runs the Time Photo Studio with Lu Guang.

Possesses the ability to see past information through photos and guide Cheng Xiaoshi. He is always calm and rational, valuing principles and rules over emotion. Though he appears cold, he is a responsible individual who deeply cares for his comrades, striving to make the best choices without wavering even in moments of crisis. He is a reliable partner who complements Cheng Xiaoshi's weaknesses as they solve cases together. He runs the Time Photo Studio with Cheng Xiaoshi.

Liu Xiao's pet and symbolic animal. A light purple owl wearing glasses.