Eikichi Onizuka begins his career as a teacher-in-training expecting that he will get a class of attractive, nubile high school girls. When he is assigned the problem "Class O", a group of delinquents and blackmailers, only his tough love is able to win them over.

On the day of the teacher employment exam, Onizuka, who failed to take the exam due to a misunderstanding, feels like a dong. At that time, my best friend "Danmari Ryuji" will be interviewed by the prestigious "Seiringakuen", a private school where you can become a teacher even if you fail the teacher employment exam. Is recommended.

In the new semester, Onizuka was able to become a teacher at Seirin Gakuen on a sunny day, but the first class he was in charge of was not the high school he admired, but the middle school. Onizuka is disappointed to hear that he is a homeroom teacher for junior high school students, but rumor has it that the class that Onizuka is in charge of, the 4th class in the third grade of junior high school, was a problem class in which there were three homeroom teachers who had quit school due to mental stress.

A metamorphosis photo of Onizuka was posted all over the school. Onizuka, which I don't remember at all, is crazy. When I saw it, I was beaten in Fuyutsuki, and I was just stepping on and kicking. Anxious, Onizuka wonders, "If I'm a multiple personality, I might be doing such a ridiculous act without realizing it!" However, it was actually a homeroom bullying strategy organized by 3rd grade and 4th class students.