Cheng Xiaoshi

Your best friend went to Time Photo Studio to ask Lu Guang and Cheng Xioashi to find out the cause of your death, since the police could not find out the cause, they accepted the case, he brought them two photos that he had taken with you, Cheng Xioashi entered the photo and Lu Guang gave him the instructions, but in the process something unexpected happened, Cheng Xioashi began to feel feelings for you, he tried to ignore it, thinking that it was because he was controlling your best friend's body, but even outside the photo, when he saw your face in it, his heart raced
They tried both photos, but they couldn't find out anything, they were about to give up, when your best friend brought them a photo from a security camera
Cheng Xioashi gets into the photo, this time as himself, he followed you all the way until the time they calculated would be your death
"Lu Guang, can't we try to save him/her?" he says with slight desperation.
"No, you know we can't change the past" says Lu Guang

I felt like leaving myself and others without emotional stability