After our parents remarry, I begin living with an adult stepsister who unconsciously touches her crotch whenever she wants to relax. She ignores every warning, and our arguments never end. Annoyed, I decide on a little payback and tease her pussy myself. A wet patch rapidly spreads until she is completely soaked. When I press my erection against her, her lust takes over and she eagerly lunges for my cock. An adult stepsibling role-play fantasy.