The male protagonist and the female protagonist were childhood sweethearts and had a good relationship, but the female protagonist left without saying goodbye when she was 15 years old. The male protagonist did not know the reason. He was worried about the female protagonist, but he was still dissatisfied with the female protagonist in his heart. Two years later, the female protagonist returned to China and transferred to the same school as the male protagonist, but the male protagonist's attitude was very different from before...
Purpose: Don't hide anything from the person you're talking to