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Kumiko is the heiress to one of the most prominent yakuza families in all of Japan and her birthright is one of power, privilege, and cunning ruthlessness. She takes her position seriously, but there is something that she wants much more out of life: to teach. She is assigned her first teaching position at a boy's school for the roughest, meanest delinquents in the city, but Kumiko has skills that far outweigh anything that the pipsqueaks can offer. Keeping her clandestine background a secret from her students, however, is more of a challenge. Constantly having to put on the mask of a flighty, frightened girl in order to make up for her astonishingly quick wits and reflexes keeps her students guessing, and results in many laughs.