Forty-three-year-old piano teacher Kyoko Yabuki appears as this installment's married woman. In truth, she harbors a twisted sexual desire she can't confess to her husband, and has requested participation, saying, "If things continue like this, I might end up committing a crime." When questioned about her desire, she blushes and confesses with full masochistic longing: "I want to be seen in humiliating situations." To fulfill her, a remote-control vibrator is attached to her body before she goes out for a walk. On the balcony, she's forced into embarrassing poses while the vibrator is inserted, her nipples clamped and tormented. Still unsatisfied, Kyoko is then restrained with handcuffs and subjected to servile blowjob scenes, spanking sex, and even public urination—unfolding a full range of extreme acts.