Sae and her husband share a home where her nephew-in-law Kouji is staying while he is job hunting. One day, while Sae is cleaning the bathroom, she sees a figure reflected in the window... Kouji is sniffing Sae's panties! To encourage Kouji, who failed his interview, Sae shows him how she masturbates in her underwear, making him climax three times! She uses her voluptuous breasts to give him a titjob, handjob, and blowjob to squeeze out his semen! When Kouji gets a job, what awaits him is sex with Sae in her underwear! In the end, he gets pregnant from a creampie, a forbidden sex session!