A passionate teacher, Kumiko Yamaguchi, a.k.a. Yankumi, is now overseeing the new students of Class 3D of Akado High School, who still have not opened up to her and are giving her a hard time.
One day, the students of 3D get harassed by street hoodlums. Then, Reita, a leader figure of 3D, shows up and beats up the hoodlums, yelling "Keep your hands off my friends." The next day, the guys
