Ah ah ah, how to write the introduction & series. It's a fresh article, I'm a newbie, there is no fixed CP at the moment, I don't think anyone will read it_(:з∠)_. The content mainly tells the story of a demon that I met in my own store. This demon is responsible for selling memories, and the exchange ratio depends on your happiness. Sometimes it helps others, sometimes it hurts others. I probably can't write a very complicated conspiracy, so please give it a quick thumbs up, little cuties (??ω??)
Intention: Imagine that there are unknown secrets behind history,