The Gokusen is about Kumiko Yamaguchi, a new teacher at Shiroken Academy, a high school for troubled boys. Her class is full of delinquents and ne’er do wells, underachievers that can be violent, even bordering on psychotic. Boy are they in for a lesson, though, because teacher isn’t some wilting flower, she’s the ojou of a yakuza family, and she takes her job seriously, even if she isn’t always! The question is, can she keep her students and the school staff from discovering her criminal background? Why does a yakuza princess even WANT to teach?