Yuko, a beauty consultant, was troubled by leg and back pain due to her job that required a lot of standing. Her husband introduced her to a chiropractor run by her father-in-law, but her father-in-law was a terrible perverted chiropractor who performed obscene acts under the guise of treatment. Yuko, who was weak to pressure, could not resist the erotic massage and writhed and came many times. With her weakness exposed, Yuko became obsessed with her father-in-law from that day onwards...