Travel Through the Protagonist at the Beginning and Reverse the Ending of the Villain

[Travel protagonist + Visible notes + Fake system + Non-toxic throughout the process] [Easy and lively + suitable for both men and women + online IQ + no knife required throughout the process] Li Moumou was pushed into the novel world due to negative reviews. The system releases a mission, and you can go back as long as you reverse the original ending of the story. But what he didn't understand was why the villain appeared in advance? Have you found him yet? Do situations always happen around you that are not mentioned in the novel? Or even brand new characters never seen in the books? Why are the developments of the story always unexpected? And this one, why doesn't everything look right? And no matter how she asked the system, she would never know. Li Moumou was very confused...