Short stories are the main body, mainly narrative, and more of an emotional type. Sometimes, we obviously care, but forget to express ourselves; sometimes, we forget that he or she is already dead. The reason why there are regrets in life may be that we understand but also don't understand.
We should be kind to ourselves, because this life is only so long. Then please be kind to the people around you. I don't know if I will meet them in the next life.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.