If you have a flock, you can't be able to do anything for the Fagus crab

Yukata who is licking the school and study is good for the class boys students and the class obstruction every day. It was a super problem child who was not able to be able to be taken against the teacher in charge of the teacher and the boycott. However, it becomes the third grader, and everyone is preparing for the examination, and the priority is given to the study more than play, and it is isolated. The teacher who reverses the position dares to use the student for the course and make a revenge of the revenge.