I Think My Friend Will Become the Demon King

'''※ Please be aware that this work contains elements of coercive relationships and violent depictions. Please consider this before purchasing. I transmigrated into the body of a villain in a fantasy novel where the protagonist constantly struggles and defeats the Demon King. I was planning to train hard, save money, and escape to a safe place before the world was destroyed by the Demon King… But damn it, when I came to my senses, I had become friends with the guy who would become the Demon King and destroy the world in a few years. And this guy, it seems he wants more than just friendship. The bigger problem is, I don't dislike him all that much either. * * * I shook my head and firm...