The Villain Died Unexpectedly, Don't Make Me Take His Place!

[Western Fantasy, No Overpowered Protagonist, No System, No Idiocy, No Cliches] [Mind Games, Transmigrate into a Book, Multiple Heroines] Yun Chen was up all night reading a Western fantasy novel. He only had to stretch, and suddenly he was inside the story. From the start, he ran into the novel's biggest villain, the final boss, and then... died just like that? The madman Mo Lüte, one of the boss's subordinates, took him as a test subject. I, Yun Chen, can't just surrender without a fight, so I decide to play the villainous boss myself and create a righteous protagonist, a Hero. But why are you all looking at me like that? I'm not the Hero!!!