SPRD-590 - My mother-in-law is way better than my wife... A dangerous weekend with a sexy mother-in-law

As an early entry in this series, it doesn't follow the now-standard story where the mother-in-law sleeps with her son-in-law out of guilt because her daughter refuses him. It even has a plot point where the mother has a 'sex friend.' This character becomes unnecessary for depicting the dynamic between the mother and the daughter's couple, so he disappears as the series progresses. Fumiye Satsuki gives a genuine, amateur-like performance, but her looks are a bit lacking, so I'd only recommend this to those who prefer mature women.