Gokusen Season 1 +SP
Episodes: 12 + Special (Graduation)
Broadcast period: 2002-Apr-01 to 2002-Jul-03
The story of a young, idealistic teacher who enters Shirokin Gakuen with hopes of making a difference in the students' lives. However, Yamaguchi Kumiko (Nakama Yukie) is in for a rude awakening when she finds that she will be the homeroom teacher of 3-D, the hardest class to maintain in the school. The students have multi-colored hair, sloppy uniforms, and show absolutely no respect to her. The leader of the class, Sawada Shin (MatsuJun) is lazy but bright and shows some interest in Yamaguchi when he notices that she is very different from other teachers. The students try to bully her to make her quit, but their attempts don't get them very far.
What the class and the rest of the school does not know is that Yamaguchi Kumiko is actually the 4th generation heir to the Ooedo Group, a notorious yakuza clan. Even though her family would like her to take the title of Ojou when her grandfather dies, they have accepted the fact that Yamaguchi would rather be a teacher.
Eventually, the students learn to respect their quirky teacher because of her devotion to them, and even give her a nickname: Yankumi.
Nakama Yukie as Yamaguchi Kumiko (Yankumi / Ojou / Kumicho) (Math Teacher/Class 3D adviser)
Matsumoto Jun as Sawada Shin
Namase Katsuhisa as Sawatari Goro, Kyoto (School Vice Principal)
Utsui Ken as Kuroda Ryuichiro (Kumiko's grandpa / 3rd Generation Oedo Yakuza Boss)
Anan Kenji as Wakamatsu Hiro
Kaneko Ken as Asakura Tetsu
Uchiyama Shinji as Tatsukawa Minoru
Ryogoku Hiroshi as Sugawara Makoto
Oguri Shun as "Uchi" / Uchiyama Haruhiko
Waki Tomohiro as "Kuma" / Kumai Teruo
Narimiya Hiroki as Noda Takeshi
Ishigaki Yuma as Minami Yoichi
Theme song: Feel Your Breeze (V6)