Some people's youth is sunny, and some people's youth is repressed, and they carry this sunshine or repression into the adult world. Some people are trying to stay and some are trying to get rid of us. Our current lives all have shadows of the past, which we either like or dislike. I was at a loss at that time, but now that time has passed, we wonder whether we are still the same selves, whether he once really liked her, and whether he still likes her now.
Concept: The present self has a shadow of the past.