You are passing your step sister room and can’t help noticing what she is doing, you stop and watch through the gap in the door while Aston masturbates with a glass dildo. You push the door open a bit more to get a better view, but she has seen you and want to know what you are doing, then she notices the bulge in your pants. She suggest you have a wank to get rid of it and you can stay and watch her masturbate if it help, she quite likes being watched.
