Yesterday so and So

Xu Shan felt that his relationship with Cheng Guiyan was difficult to describe. It doesn't seem appropriate to say they are friends. After all, there is already some kind of close relationship. But when it comes to taking it a step further, it doesn't seem like it's to that level emotionally. Not old friends, nor new lovers. CP: Cheng Guiyan x Xu Shan Purpose: Perfecting oneself in love and friendship