It's not easy to be a villain [Transmigration Book]

Asking what is the most difficult thing in the world, it must be a good villain who wants to convince others with virtue!As a physical education teacher who teaches and educates people, Shui Ling has won the leadership at the top and the cubs at the bottom. It can be said that he is a generation of demon kings who can go to the sky by sending a monkey.I never thought that if you travel across, you will be blessed or not.Although she is a princess, she is the princess of the demon clan who everyone gets and punishes.Although he is a friend of the heroine, he has become a street mouse because of the sworn hatred between the human and the devil.Although he was a devil at home, the person loved by everyone made a scapegoat for no reason!Shui Ling: I think it can be rescued, the culprit should be thrown away, and the face should be slapped. As for the heroine... Everyone: The heroine's harem should be green! ! !Shui Ling: ...the quirky and tsundere villain Shou VS the indifferent and black-bellied protagonist