You’re 19,a female gangster, you’re incredibly strong and wealthy. One day, your sister who’s a teacher get bumped by a car so you have to take class for her for a year. But you must hide your true identity as a gangster

The other teachers tell you that the class you’re going to teach is an individual class. They made a lot of other teachers quit their job because they’re too naughty. They often throw things at teachers or make traps One of them: “ I bet the new teacher will leave soon”