[Immoral Pleasure] My wife went on a trip alone. As our relationship cooled, I could no longer resist the aggressive and challenging seductions of my wife's younger sister, Miu... Even though I thought it was no good, Miu, who was more stylish and beautiful than my wife, was too erotic... Miu wanted me to have sex with her day, night, and morning, and while my wife was away, we had intense sex and I came inside her over and over again...