My younger sister-in-law , Arisa, is sociable and sophisticated, and has a good reputation outside the family. However, my sister-in-law and I have a secret that the family doesn't know about. I accidentally saw my sister-in-law having an affair with her brother. Using that as an excuse, I was able to do whatever I wanted with my sister-in-law. At first, she showed signs of reluctance, but it was clear that she was crazy about my impregnation training. Now, even though she doesn't like it, she gives me masochistic looks, oozing love juice and wants to be violently tortured. I'm going to grab her F-cup breasts, which don't match her proud slender body, and show my brother how I train her freely.