Dressed as the Heroine's Ex-Boyfriend

Lian Du passed through the book and became the male number N in a novel about a domineering president. His end in the book was very bleak, but Lian Du didn't care about it. Faced with a new life, he decided to seize this opportunity to make up for his regrets. However, after traveling through the book, there was a system in his mind that claimed to be a face-slapping maniac...