I really like this one.
I hate it when adults reincarnated as a child but act very mature beyond their supposed age and the other characters around don't questions it at all, like that's not normal child behaviour. Especially when they go out to do things like making deals, contract, having knowledge or some type of magic beyond their age or anything that even an adult would have a hard time doing it, everyone just accepted it all like its normal.
And this is why I don't generally read this type of genre anymore. I don't think this one will be any different but I tried reading a few chapters anyway bc of the cover, and now I loved it




It has the same setting as this one where every situation made him look like the mastermind but he transmigrated(I think) and became a bookstore owner where the villains of that world would go to borrow books
'I’m Really Not The Demon God’s Lackey'