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My father-in-law, Eiichi, who is living a comfortable life abroad, suddenly returned to Japan and stayed at his son's couple's house for a while. Yuna, a beautiful bride who doesn't think very well of Eiichi, who has always had a violent relationship with women and is pushy and lacks consideration. "If my husband goes to work, I'll be alone with my father-in-law." From the next day, Eiichi teaches Yuna how to play golf without being asked. Eiichi's nasty black hand reaches out to Yuna's secret area...