My wife, Nozomi, who has been exercising for the first time in a while since she was a student and has become sore. My father-in-law, Kazuo, who lives with me, came up with a bad idea when I saw such Nozomi. "I'll give you a massage!" Kazuo lied about having a judo therapist's license and began groping Nozomi's body. Nozomi realizes something is wrong, but loses to Kazuo's skillful storytelling and physical pleasures and is made to cum. Kazuo's erotic act, which has completely taken over the taste, escalates day by day.