The Gokusen

Kumiko Yamaguchi, the 23 year old granddaughter of a yakuza boss, becomes a teacher at Shirokin Gakuen, an all boys high school.

Kumiko asks the class to behave for her evaluation test but no one shows up for class on the day of the evaluation. Shin decides that everyone will go back to class if Kumiko will fight him which Kumiko agrees to.

After Kumiko saves a woman from a drunk man, she is surprised to find that the woman is Kuma's mother. Kumiko grades math tests and after she learns the class' average is 21 she holds remedial classes, hoping some would come.

After being suspected of stealing, the group including Kumiko, set out to catch the real thief.

Kumiko must be the head of the Ooedo clan while her grandfather is hospitalized. This episode shows some of Kumiko's childhood.

Shin and Kuma see Kumiko get into a car with two people who are part of the Ooedo clan. They follow her to her house but are caught and Kumiko and the clan put on a act so Shin and Kuma won't find out anything. Kuma falls for the act but Shin finds out the truth but promises to keep it a secret.