A project to seriously investigate whether a married woman suffering from sexual frustration will become aroused when shown a man's erection! This time, "Nao-san," a woman with a voluptuous G-cup bust, has agreed to participate due to financial difficulties. Whenever she sees a man's body, her heart races uncontrollably and her excitement builds rapidly—her panties already soaked. With arousal overflowing, she proceeds to a thigh job, but becomes so wet that it leads directly to bareback penetration, unfolding into an intensely erotic scenario.