Having an affair with my slutty sister-in-law Aika Yumeno. One day I caught my sister-in-law Aika watching an adult movie on the TV in front of her bed, she was lying face down with her butt facing away while wearing a skirt. This made me unable to control myself, I wanted to fuck my sister-in-law right now but was very scared. Then unexpectedly Aika pulled me down to watch an adult movie with her, and then we kissed each other, tongued each other and then the sex scenes that seemed like the bed collapsed happened. I had an affair with my own sister-in-law in my own house.