``I want a massage...'' My father-in-law, who is retired and spends his days in a daze, suddenly muttered. - Matsuri felt a little reluctant to ask her father-in-law, but she asked if a former chiropractor would do it for her since she wouldn't have to go to the store and she was tired from doing housework. - However, my father-in-law was not just a chiropractor... - With years of experience and skill, Matsuri has become so sensitive that she can't stop convulsing every time she is touched, and she falls into the sensual development that continues all day every day as a bored old man...