In short, I was reincarnated in a fantasy world, to be exact, it was a novel world which I had read before I died. For your information, I was neither the protagonist or the villain in that story. I was just simply a Master of the final villain, who was known to be the mastermind behind all the tragedies. According to the novel, he was also the one who would bring the world to chaos. 'Sound pretty tough. But that is none of my business' Since I was bored, I decided to teach him anyway.