My sister-in-law suddenly came to my house and drained me dry. (Narita Tsumugi, venx00026)

My wife went back to her hometown because we had a fight. Then, my sister-in-law, Narita Tsumugi, came to stay at my house. Apparently, she was sexually frustrated and wanted to have sex with me. She even came in to help me wash my back while I was showering, and when she saw my erection, she grinned lewdly and started having sex with me…