Get History Wrong and You Die! I Know It All

I haven't read much, but after reading the first few chapters, I have a question. These school teachers who mark test papers all know the correct answers, so shouldn't they be the awakened ones if they know history? Why do you want to help the villain? If the answer is given by the villain, why should it be given to civilians so that they can understand history? Isn't this the possibility of increasing the probability of awakening? What this kind of monster who wants to break history should do is cancel the history class instead of revising the history class and get the answers for the teacher to correct the paper...

The subject matter is very good, but the plot is too classic and the characters are too witty. If I can come up with some ideas later, I can take a look at it.