Lady, you don’t want to be corrupted by the devil, do you?

He, Zhou Jiuyu, traveled to an ordinary world of supernatural powers.
But every time he fell asleep, he could dream into the exciting world of the book! From the sword fairy who was about to fall in the green book, to the beautiful female principal in the contrast book... He, a pure love warrior, saved the female protagonists who were about to fall in the book in his dream, until... On the day she entered the supernatural martial arts school, she was pulled into an empty classroom by the sword fairy, the kendo instructor, for one-on-one instruction...