This article be!
The hero and heroine are childhood sweethearts and have a mutual crush.
The male protagonist passed away due to work, and the female protagonist passed away from stomach cancer. The female protagonist left a letter to the male protagonist... But he could never see it again.
Ps. It is not easy for the author to code, please do not copy. If you have any suggestions, please comment~
Intention: I accidentally saw a video on a certain platform, wrote the clips, and finally wrote a novel