[First paragraph] At the end of 2011, a group of people on the Internet planned a sex party on an online forum. The participants were the organizer, Tsai Yu-Lin (hereafter referred to as Tsai); a girl known as "Hsiao Yu" who was alleged to be nineteen-years-old, but was later confirmed to be underage (hereafter referred to as Yu), twenty-one men who each paid NT$800 to participate, three of whom were accused of having served as security personnel, and two women who served as assistants. The day