I Became the Yandere Villain's Sister-in-Law, and He Flirts with Me Every Night

Bai Ranran transmigrated into a book as Lin Ran, the vicious sister-in-law of the yandere villain Su Yan. The good news: His older brother, Su Huai, had topped the imperial examinations, and the Su family was rising to prominence. The bad news: She was about to die, and wouldn’t get to enjoy any of this wealth and glory. Her killer was Su Yan, the younger brother-in-law she had abused for three years. After enduring it all, he finally tortured her to death on the road to the capital. Should she become his devoted lapdog and win him over, or become even more unhinged than him? Bai Ranran decisively chose the latter. Don’t ask. It was just a gut feeling! Later, the villain gripped her waist and spoke in a gentle but deadly voice: “Divorce my brother and come with me.” Bai Ranran: ... Su Yan was reborn. On the very night he was reborn, he planned to kill Lin Ran, that vicious woman, but failed. The next day, he realized that the vicious woman seemed a little different from her past life. She seemed more interesting now, even more unhinged than him. He decided to take his time playing with her, but gradually discovered that she wasn’t Lin Ran at all. Bai Ranran had taken over her body. This woman wasn’t as vicious as Lin Ran, but she was a master at manipulating people. He ought to hate her, yet somehow, he began falling for her, step by step...