Namaiki Junjou Furyou Shoujo | なまいき純情不良少女

Protagonist that is bullied before and became a truancy, it proposes the possessing idea and it becomes a teacher, it began to live a life to protect a weak student.

One day, a suspected schoolgirl prostitution lifts the student to who the label of delinquent behavior such as clothes disorder and cutting class is stuck. When you call parents to draw attention, having appeared there... it was the delinquent who has tormented before. The talk doesn't respond and either it is made fun of, Protagonist from which a past wound is dug up determines on revenge.

The revenge is desired of that delinquent... Toward the daughter of delinquent, it is released now.