Munou no Akudou Ouji wa Ikinokoritai: Renai RPG no Akuyaku Mob ni Tensei Shita Kedo, Gensaku Mushi Shite Saikyou wo Mezasu

"Brace yourself, Protagonist. With this power, I will create a new future." When I realized it, I was in the world of my favorite romance RPG. However, I was reincarnated as Harold, the "Useless Evil Prince," who breaks off the heroine's engagement and meets a disastrous ending. Moreover, due to...

Source: MyAnimeList