Munou no Akudou Ouji wa Ikinokoritai: Renai RPG no Akuyaku Mob ni Tensei shita kedo, Gensaku Mushi shite Saikyou wo Mezasu

"Prepare yourself, Protagonist. With this power, I will change this predetermined future." One day, he suddenly awakens in the world of his favorite romance RPG, only to discover that he has been reincarnated as Harold, the "Incompetent Evil Prince" whose engagement to the heroine has already been broken off. To make matters worse, the game's setting states that Harold cannot use magic and is destined to be defeated by the protagonist. Refusing to accept that fate, he decides to change the story. His first step is to prevent the engagement from ending, after which he begins training himself. Through that training, he acquires a power different from the one Harold had in the original work. Wielding enormous magic he should never have been able to use, he overwhelms everyone around him. Before long, his single-minded pursuit of strength also catches the attention of the other heroines. The overwhelmingly popular villain-reincarnation fantasy begins as Harold fights to survive, defy the original plot, and become the strongest.