The moment came when you dared to ask your older step-sister to show you her pussy. Somehow she agreed - yes, I'm shocked too. The best part is that she started to like it, and the sight of your erect dick made her start masturbating. And she even let you cum on her ass? I guess this is your lucky day! I wonder if she will use a gift from you. You would probably love to see the glass dildo in her pussy from very close up....