Gokusen - ごくせん
Kumiko Yamaguchi, heiress of a yakuza clan, pursues her dream of being a high school teacher. The boys' school where she teaches does not have a good reputation. In addition, “Yankumi”, by her nickname, is assigned the delinquent class, 3-D.
Valiantly, she teaches her specialty, mathematics, but quickly gets involved in several other levels. She will quickly discover that behind their appearances of delinquents, 3-D students hide complex personalities and often moving personal stories.
Yankumi, devoted entirely to her ideal of teacher, will always be there to get them out of a bad situation, sometimes using her skills as heir to the clan!