a wives' boyfriend, name niece.

Kyoko Anzai worked as a tutor for the son of her husband's colleague (Oki). One evening, after finishing his tutoring career, Kyoko witnessed Oki and her sweetheart acting in an ugly manner. A few days later, Kyoko was killed by Oki who had taken her husband's drink with sleeping pills. Kyoko was threatened and had no choice but to receive a training. With humiliation, shame and pleasure, Kyoko developed the pleasure of being abused due to her jealousy towards Oki's mistress.