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Married for six years, Saki, who works as a visiting helper, is a husband and wife who both work. Kind and good-natured, she works energetically every day to help out with the family's finances. One day, she goes to visit a new home where she is receiving care. The house is inhabited by an elderly man who lives alone away from his son, who lives far away. The old man says that he used to be a real estate agent and made a lot of money during the bubble economy, but he can't trust banks, so he has his tens of billions of yen in cash in a safe... Saki is tricked by the old man, who tells her that he will inherit his fortune and even asks her to take care of his lower body... "When I die, I'll give my inheritance to my wife," and "Let's have sex until we die, Dad." The married woman who works as a care helper is deceived by the insatiable old man and has her ripe body devoured.