I am the villain but fall in love with the heroine Love Rival

(Reupploding) Meet Han, a young man and self-professed NEET (Not in Education, Employment, or Training), who makes a living by streaming his gameplay online. One fateful day, he suddenly finds himself transported into the world of one of his favorite games. To his surprise, he discovers that he has been reborn as the villain of the story, despite his previous admiration for the game's main heroine. As he navigates this new reality, Han has been reborn as the main antagonist of the game—a bloodthirsty and malevolent individual despised by all, including his fiancée, who happens to be the main heroine of the game.