The Gokusen

Kumiko Yamaguchi, nicknamed "Yankumi," starts her new job as a math teacher at Shirokin Gakuen Private School. She's put in charge of class 2-4, a group of unruly delinquents who immediately test her patience with their antics. Despite their efforts, she quickly earns their respect. However, the school has no idea she's secretly the next in line to lead the Oedo Group, a notorious Yakuza family. Balancing her dedication to teaching with the need to hide her criminal ties proves to be a challenge.