When the heroine Gu Wen was little, a man's appearance shattered her family, and that man became a shadow that haunted her childhood. After Gu Wen started high school, she met a group of friends, including that boy. Gu Wen slowly began to emerge from that shadow, but the arrival of a letter sent her back to that time. After getting into university, she left without saying goodbye, and that boy also disappeared without a trace.
There's a bit of angst. I may update very slowly.
Theme: Just writing for fun