Protecting the Villain, but Becoming the Top Black Moonlight

[Crazy criticism of the yandere villain × full score drama queen + 1v1 + through the book + system] Ji Shuyan turned into a vegetative state due to a car accident, and was selected by the system to become a member of the Book Traveler. As long as she successfully prevents the villain Jie Yan from turning prematurely black and committing suicide, she can gain the health points she regained when she woke up in reality. She used her system ability to transform into Jie Yan's childhood Bai Yueguang Anran, and stayed with him to protect him for six years. Until the moment she completed her mission and planned to retire, a young man choked her lifeline and asked her who she really was. She managed to escape through the system, and when she woke up five years later, she became the daughter of the Ji family. However, the beginning was Shura Field, where she met Jie Yan again. During the past five years, Jie Yan searched for her like crazy, and even set up An Ran, the heroine of the original world with the same name, just to get information about her. Ji Shuyan looked at Jie Yan who had changed so much and couldn't express her pain. She just wanted to cover her waistcoat tightly. Little did they know that she fell off her horse the first time they met. Jie Yan forced her into a corner, "Ji Shuyan, I will let you know that being tied to me will be your worst decision."