In this 10th anniversary production, the targets of a slightly naughty trap are two gorgeous sisters. The older sister, a nurse, is excited and seduced by showing off her boyish penis at a 150-degree erection and by having her read erotic novels. The younger sister, a housewife, is seduced by pushing her erect penis against her on the bus, showing off her unflaccid penis. And on the sisters' trip to a hot spring, he shows off his erect penis and rubs it against her, leading to a threesome with a sister threesome!