[This was a custom request] Your step-sister is lying on her bed, about to enjoy some private time masturbating when she's interrupted because she hears someone at her door. She calls in in, covering her modesty - somehow she knew it was you. She's just in her underwear but she doesn't seem to mind. She tells you she's noticed you watching her before... in fact, she's noticed a lot of things that you've been doing.

You're pretty terrified by exactly what she might mean by this but your horror turns to sheer arousal as she tells you she knows how much you want to see her naked, and ... Show more