"Rina"'s father-in-law is a woman lover and gets his hands on his wife, and it gets caught in a man and gets beaten up."Rina" offers her body to help his father-in-law.The father-in-law cries at the appearance.The man's request cannot be completed at once, and he repeatedly asks "Rina" for service.A change takes place in her heart and she gradually becomes obsessed with sex.What will happen to her when her husband returns from his business trip?Examination number 247859.