The introduction is useless, don't mind it too much.
The story of an amnesiac Xiao Gong who worked hard to regain his memory and became a winner in life and then a little shou who lived a shy and happy life for the rest of his life.
The inspiration when watching Mushishi, if it is somewhat similar, may be because of this reason.
Although I feel that it is unethical for me to always dig holes but not fill them.