Hell is empty, demons are in the world, cause and effect cycle, retribution is unhappy, you planted the cause, then I will find you to finish the result.
I don't know how to write an introduction. It's just a fast-travel story about revenge and cause and effect. There is no logic, no outline, and a lot of bugs. Moreover, my writing is not good. I will update the article to update my mood. In a word, if you like what I write, you can read it. The author is quite happy. If you don't like it, don't scold the author casually, because I will scold him back.