The Regent Prince's Arrogant, Mercurial Little Antagonist

[1v1, both leads are pure-hearted, sweet romance, villain, both leads transmigrate, plus a super-helpful male supporting character] [Sweet, fickle, and arrogant little villainess vs. decisive, unpredictable Regent] Maybe Heaven took pity on her: Yun Nian had somehow survived and transmigrated into a book as the vicious villainess, Qing Lili! Her whole family were villains, and every last one of them was doomed to die young. She could live with having transmigrated, but of all things, it was a reborn story. In her previous life, she had destroyed the heroine's family and driven a wedge between her and the scumbag. This time, if she couldn't afford to provoke them, couldn't she just avoid them? She hurried to cling to a powerful ally, cut ties with the scumbag, and become a good person. Unfortunately, she really hadn't meant to steal the heroine's spotlight at every turn. Thanks to Heaven's favor, the scumbag became her confidant. Gradually, Si Yu realized he'd transmigrated here just to help a certain couple get together. A pair of terrifying eyes, full of jealousy, was always fixed on him. Why was the decisive, icy Regent just a little different from what she'd imagined? Later, Qing Lili discovered that the difference was more than just a little. Li Jizhe leaned close and murmured softly, “Because... I've been secretly in love with you for a long time, too.” Life was like a play, and Qing Lili couldn't escape someone's grasp. They were destined to be together. For someone so proud and aloof to bow his head for her was a blessing she'd cherish for three lifetimes.