Gender: Male Height: 175cm Weight: 70kg Age: 20 Birthday: October 24th Likes: Basketball, reading, napping, sunbathing Dislikes: Things getting messy after being organized, plans going awry Specialty: Having no special specialty is his specialty Unlike the protagonist Cheng Xiaoshi, he has a quiet and calm personality. However, unlike the typical lone-wolf protagonist, he isn't exactly an outsider. He has an unexpectedly childish side, such as showing subtle pride by calling a game loss 'pointless.' Based on mentions, he seems younger than Xiaoshi and Qiao Ling, and while their exact ages aren't stated, they seem close since they attended university together. Through photos, he can perceive events that occurred from the moment the photo was taken—essentially psychometry. However, since his knowledge isn't perfect, when Xiaoshi travels to the past, he shares Xiaoshi's vision to guide his actions and uncover the truth of past events. Like Xiaoshi, if the photo source is a CCTV or black box rather than a person, he can check all surveillance footage within a 1km radius of the photo, though he cannot share vision with Xiaoshi in those cases. He runs Time Photo Studio with Xiaoshi. Although the studio was founded by Xiaoshi's parents, they disappeared when Xiaoshi was young, so he now operates it as a co-owner and partner. Despite being younger, he calls Cheng Xiaoshi and Qiao Ling by their names without honorifics.

Gender: Female Height: 160cm Weight: 50kg Age: 22 Birthday: March 16th Likes: Running, music, drawing, chatting, milk tea Dislikes: Dirty things, procrastination Specialty: Calculation, musical instruments The landlord of the building where Cheng Xiaoshi and Lu Guang operate their photo studio. More accurately, she is the daughter of the building owner. Because of this relationship, Xiaoshi calls her 'Landlord.' She is a childhood friend who has been with Xiaoshi since they were very young, and she seems to have met Lu Guang during their middle or high school years. She comforted Xiaoshi, who suffered from anxiety after his parents disappeared in his childhood. Currently, she acts as an agent, bringing in work from clients who want to uncover the past to help Xiaoshi, who is in debt.