Tsuzuki Yoshio and her husband get along well, but she was not satisfied with their intimate life. Her husband works at a company dormitory, her brother also works at the same company, and they live in apartments on the 7th and 8th floors respectively. The brother moved into the apartment directly below… The sister-in-law has miraculous huge breasts! This is the story of such a wife and her brother-in-law, Yumami. It all started with erotic underwear falling from the floor above. The sister-in-law with huge breasts and the brother-in-law with a massive penis stared at each other in silence. Then Yoshio naturally and unconsciously began to stroke his member with her hand.
