T28-361 Yui Hatano, a returning sister who wants my cock even though her parents are there

The perfect older sister who is the envy of everyone, with excellent grades, good looks, and good manners, is actually a pervert who loves drinking her younger brother's semen. She's a lewd slut who enjoys the thrill of sneaking into her younger brother's room, even in front of her parents. A strange incest fantasy between an adolescent younger brother who is about to take an entrance exam and a perverted older sister who instinctively squeezes the younger brother's semen!