It's been exactly six months since I fell in love with my wife's younger sister, Rui. She's petite, has a cute smile, and has big breasts that don't match her body. She's the kind of sister-in-law you just want to hug. But Rui started dating Hayato, a junior at my wife's company. But my feelings for Rui continued to grow... One day, my wife and Hayato decided to go on a business trip overseas for five days. This was my chance! I called Rui over, raped her, trained her while she cried, and recorded our love on video.