When Ji Yanhuai was young, he contracted a disease due to an accident in which he would forget bit by bit if he didn't see people for a long time. This continued until he met transfer student Meng Yitong in his second year of high school, "Hey! My roommate, let's make a friend!" He didn't know it at that time, but this person was a beam of light that he never wanted to forget and wanted to see every day.
Purpose: No one should have regrets