I Ruined the Script of the Overpowered Dragon

Xu Shulou had a dream, in which she found herself as a character in a strange story. The male lead of the story was a man who had the script of a typical overpowered protagonist. Opportunities and treasures would all fall into his embrace; beautiful women from all over the world would be enamored with him. And the first female lead was Xu Shulou's weak little junior sister; the second female lead was the saintess of the demon clan; the third female lead... the fourth female lead... Where did Xu Shulou rank? After flipping through the plot, she discovered that as the legitimate fiancée of the overpowered protagonist, she was merely a cannon fodder. In the story, everyone in the sect favor...