Through the Book: the Villain Career of the Wrong Senior Sister

1V1 group favorite, multi-part story, there are two male characters and a third male character in the extra story, and the male protagonist is reborn. Bai Youyou, the eldest disciple of the head of the Qingling Sect, awakened her past life memories on her fourteenth birthday. It turned out that she was a time traveler. Bai Youyou counted her fingers and found that combined with her current arrogant attitude and arrogant attitude, she was a perfect cannon fodder. Instead of being cannon fodder, it was better to strike first, hug the protagonist's thigh tightly, cultivate a demon and become the big devil, so that she could survive until the last chapter. The reborn Demon Lord gradually realized that something was wrong after becoming Bai Youyou's younger brother. Are you the villain or am I the villain?