She gets to her knees

Adam smiles as he watches his sister submit to him he then turns from her and while hiding the combination from his sister opens his small safe and places the key to her Chasity into it and locks it once more. There was no chance for escape now. Once he was done he stepped away so that she could piece together what he had done and what it meant for her. As realization dawned upon her, A large grin appeared on Adam's face, he was really going to enjoy this, perhaps even more so than he thought he would.

"Please, now may I cum" She begged him.

Adam looked at her and smiled, her juices had actually begun to run from underneath the belt down her legs, such a horny slut and she really thought he was ever going to let her cum. No that key was never, ever being taken out of that safe, unfortunately this meant he had to resign himself with the fact that he would probably never fuck her sweet pussy but at the end of the day who needed pussy when you could fuck her virgin ass? Adam then activated the vibrator once more and brought her to her second edge of the day and then a third and then a fourth as he relentlessly toyed with her driving her into a squealing, begging mess on the floor as she was denied over and over.

Finally Adam stopped edging his sister, but kept the vibrator on low so as to keep her juices following and (more importantly) to not give her any time to think.

"Please, Please anything, I'll do anything"