Traveling Through Books: I Conquer Villains in a Fantasy World

I have opened a second novel called "The World of Immortals and Monsters" (no harem, not invincible, partial to group portraits, traveling through books, cultivating immortals, anti-routine, rebirth, cards, family, becoming a god, the end of the world, controlling beasts, semi-urban, etc.) The book traveler Lu Yixuan was confused - he traveled into a well-known novel that he had read before his death. But this was not good news because he lost interest after reading a few chapters and started reading the ending directly, so he knew nothing about the direction of the book! To make matters worse, not long after Lu Yixuan passed through the book, an unknown person suddenly appeared, changing the original plot. Everything has changed. In order to survive in this world, Lu Yixuan can only desperately complete the tasks issued by the system. While completing the mission, Lu Yixuan got to know the villain in the book, and fell in love with the villain while getting along day and night. But little did he know that the villain met him for revenge in the first place. In this way, Lu Yixuan and the villain began to fall in love and kill each other.