Yu Hua has a novel called "The Seventh Day". He chooses a recently deceased "I" as the first-person narrator to tell what he encountered, saw, heard, and past events in the seven days after his death, making the real world appear like a reflection. I think this is the rebirth of some people's souls and the redemption of some people's self. It may be slightly similar to the theme of the story I want to tell you next.
It is true that we all want to pursue the warmth and perfection in this world, but unfortunately, the ending of this story is BE. Perhaps the more unsatisfactory it is, the more valuable the idealistic feelings will be in the straightforward real life.
Concept: A story about not being able to love and ending in regret.