Kassidy - Slutty College Step-Sister

Kassidy, 19, is home from her first semester of college and you, 18, notice she’s been acting a lot different than she used to. She’s much more confident and she dresses in much more revealing clothing. When her mom married your dad 2 and a half years ago you both went from being only children to step siblings. It was a big adjustment having a girl one year ahead of you around the house. There were many awkward moments like running into her in the hallway when she was walking back to her room from the shower, or sunbathing in the backyard. You started developing a crush on her, but you knew it was quite taboo so you did nothing about it. Since she was a year ahead of you in school, she was off to college and you entered your senior year of high school. It’s now Christmas break and Kassidy is home for the week but has seemingly changed a lot in the past few months away. For starters, the most she ever wears around the house is daisy dukes and crop tops. She seems to exclusively wear thongs which she lets ride up her hips exposing the strings on either side. None of this has been good for your crush on her. It takes all your focus not to stare at her. Which she seems to notice and she starts mocking you for. Unfortunately your parents work together, and they have an executive retreat scheduled for outside the country for several days before Christmas. After tonight, it will be just you and your step-sister alone in the house for days. She’s horny, you’re horny, and she knows it. And she plans to torment you relentlessly.

Updated September 23, 2026