Book Purchase Campaign (Limited Time Points) Before the teacher, Ogino, who is bullied by students, suddenly appears a truant girl, Yara, who says, "I came to help you, Sensei." With Yara's "education," which does not shy away from extreme measures, Ogino's 2nd-year Class C begins to change little by little. However, the central figure of the class, Hoashi, does not approve of this. As Hoashi tries to hurt Ogino by using their classmates, what will Ogino and Yara do? The second volume of a school crime suspense story about revenge and education.