The main reason is that the memory of the previous life is more sour and refreshing. It is a crematorium where a young man who grew up in ancient times more than ten years ago had a secret love, humbleness and sourness, and the loss of an older person. It is earthy and sour.
There is a short story that I love every time I read it, but I forget all about it within half a month. I fall in love with it again when I read it, and forget all about it again. I said that I have never cleaned up my computer files so thoroughly.