I recommend the book "The Female Supporting Character Turns Over: The Prince Regent's Heart's Favorite" to you. The plot is very consistent with the description of the title. The female lead, Lin Qingqian, transmigrated into the novel she had read and became a cannon fodder female supporting character. In order to change her fate, she tried her best to treat the male lead, Gu Changgeng, and finally got together with him. However, in fact, Gu Changgeng was not her biological brother. I hope you like this fairy's recommendation. Muah ~😗