After I Transmigrated Into a Book, I Tore Up the Script and Rose to the Top. So Satisfying!

From cannon fodder to empress, she helped him claim the throne, only to strike a deadly blow on their wedding night! 【A transmigrated book extra with multiple identities who overturns the original plot】 × 【A cold-faced regent, warm-hearted beneath the surface, who lives for revenge】 What sparks will fly between them? After transmigrating into a book, Cai Guanrou became an insignificant cannon-fodder passerby in the original story. To survive in the book, she binds herself to a System and overturns the predetermined plot, moving between the palace and political schemes under multiple identities. She helps him clear away every obstacle and ascend the throne, while she herself becomes empress, clad in her phoenix robes and worshipped by all. She thought the worst was over and that they would spend their lives together. But on their wedding night, a fatal misunderstanding led her to plunge a blade into the heart of the newly enthroned emperor with her own hands.