A perfect older sister who is envied by everyone for her excellent grades, beautiful appearance and good behavior, but her hidden nature is that of a total pervert who loves to drink her younger brother's semen. It's not uncommon for her to sneak into her brother's room, and she's a lewd slut who enjoys the thrill even in front of her parents. A strange incest fantasy about a teenage brother who is about to take entrance exams and a total perverted older sister who uses her instincts to milk her brother's semen!