After Passing Through the Book, I Fell in Love with the Villain Koi

Title of the book: After passing through the book, I became a koi by relying on the villain [Soft and cute girl VS cold, taciturn and gloomy boy] Su Cheng accidentally traveled through the book and became the vicious stepsister of the heroine in the book. The system told her that in order to have the blessing of good luck like a koi, she must make the villain live a happy life and no longer be miserable. In the original book, Shao Zeshen is an out-and-out villain, cold-blooded, cruel and ruthless. At the age of eighteen, he established himself in Kyoto with his ruthless tactics. Just after graduating from college, he started a company that boasted his own father's business and put him in jail. When his secret love failed, he used illegal means to imprison him... So Su Cheng started to send warmth to the boss. Who wanted to give it to him, but actually got him in. Later, the man held him in his arms, suppressing his love, and said in a cold and lingering voice: "You provoked me first, you will always be mine." - Shao Zeshen always thought that he lived in the abyss of hell and never expected warmth. But ever since he met Su Cheng, the girl always coaxed him to kiss her with a blushing face and a soft voice. Only later did the feeling of missing her penetrate into his bones.