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'
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