Pampering and Abuse Are Exchanged, and the Domineering President Becomes a Whiny Monster

When she woke up, Yu Yuetong not only wore the book and became the heroine of the sadistic novel, she also swapped bodies with the overlord in the book. Now that he is the boss, he cannot be abused anymore. When he returns to his body, the first thing he will do is to leave! However, how can I change this body back? It's not written in the book!