This is a Japanese drama. This is about an awesome teacher taking care of her students. It was a pretty cool drama when the teacher protects her students with her awesome fighting skills and also gains respect from her bad students. This is Gokusen.
Our main character is the granddaughter of the leader of a clan that is kind of like a gang group. She knows her fighting skills well. She decides to become a teacher and try to make a difference in her students' lives. Her name is Yamaguchi Kumiko and when she goes to the school, she finds herself being the homeroom teacher of a difficult group of students. This group of students were labelled as the bad kids of the school and they were said to be ruining the school's reputation. She is determined and is ready to change her group of students however they don't make it easy for her and show no respect for her.
The students try to bully her to make her quit, but their attempts are useful. She also has a strong character considering that she lived with men that were part of the gang who were actually big softies. As she continues to resist the students bullying her, Sawada Shin (the leader of the students) notices that Yamaguchi is different from the other teachers. He noticed that she was trustworthy and willing to help her students even if they were said to be bad students.
The students faced different problems like fights against other students at different schools and so forth and Yamaguchi was always there. Because of her devotion to her students, they gave her nickname of Yankumi. Yankumi always took care of her students and had a great sense of responsibility over her students. Her students began to respect her and afterwards even stood up for her in her defense when she faced problems.