Yamaguchi Kumiko is the granddaughter of a Yakuza boss and is completely at peace with the fact that she is the heir of her grandfather`s empire. However, she leaves most of that up to the rest of the family and their talented lawyer, whom`s she has more than a slight crush on. Instead, Yakumi works hard to fulfill her hearts desire to be a teacher. But she must hide her background so she does not get fired from her first teaching job, which is at a school filled with tough kids and difficult students.