NSPS-775 — The Taboo Sex: My Brother's Wife Let Me Do It Under Her Futon, Chie Aoi

Five years into their marriage, her husband Satoshi was serious about everything he did. His wife Saori was also attracted to his seriousness. However, as their marriage continued, Saori began to find his seriousness boring. Her husband had an unemployed, irresponsible younger brother, who saw Saori masturbating... and then!