Yuko, a beauty club employee, was suffering from leg and lower back pain due to her job requiring a lot of standing work. Her husband introduced her to a chiropractor run by her father-in-law, but...her father-in-law was the worst erotic chiropractor who performed obscene acts in the name of treatment. Yuuko, who is weak against pressure, can't resist the harsh massage and writhes in agony over and over again. After that day, Yuuko's father-in-law started clinging to her because her weakness had been grasped...