NATR-622 The husband is physically weak and the wife is looking for a guy to satisfy her

NATR-622 Young Wife Rin Asuka Who Was Observed By Her Husband To Have Fellowship With Brother-in-law. I'm living with my brother and Asuka san. Asuka is my sister-in-law, she is very beautiful and extremely capable. However, there is one thing that my sister is always sad about: sex with her brother. Since we got married, we have had very little sex, mainly she has to pleasure herself to satisfy herself because my brother is too weak and often cannot get an erection. Because in order to keep the family happy, my brother has to help. Every night I sit outside the living room and wait for my sister to take a bath and help my brother masturbate, then come out to the living room and have sex with me, guys.