There is a goddess in the Heavenly Palace who is addicted to novels.
When she was young, she was partial to bitter novels. Some of them evolved into miniature worlds because she often read them and shed tears on them.
The characters in the novel have souls, and they are full of resentment when they die. They look back on their lives and can't figure out why they played a good deck of cards to pieces. In the end, they were ruined and their families were ruined.
The initiator of all this, this goddess, in order to comfort these grieving souls and eliminate their resentment, began to enter the worlds in the books and live a different life on their behalf.
Motto: Good people are rewarded.