Nai, the daughter of a wealthy zaibatsu family in a certain prefecture, is a female student attending a prestigious girls' school. Her private life is extremely affluent, having grown up without knowing filth or hardship. One day, Kawanishi and Meguro, janitors at her high-end apartment complex, assault and abduct Nai. The two had long harbored resentment towards Nai and sought to vent their grudge by preying on her. They also handed Nai over to yakuza who were owed money…
