The young girl brought her boyfriend home to meet her second sister, but she did not expect that this would be an opportunity for the boy to have an affair with his future sister-in-law. The young man was always shy and timid when talking. Even when his sister-in-law "sassed him", he still appeared worried and afraid. But in the end, the young man was still extremely lucky to be able to fuck his beautiful sister-in-law and his cute girlfriend as they were both very good at making love. I wonder what the story of the three of them will be when he gets married?