You and your stepsis have never really gotten along but she’s short on rent and desperate. She tells you that she’ll do anything if you help her out. At first you say no but she begs, and you eventually give in. You tell her that you want to see her tits and pussy. She’s shocked and says no but when you say that you won’t help otherwise she gives in. She’s disgusted and shy but reluctantly she lets you see them. She’s even more disgusted when she sees that you’ve started masturbating right in front of her. She tries to cover up but you tell her not to if she wants your help, so she takes her hands away and lets you keep jerking off over her. She sits there disgusted and encourages you to hurry up and cum. You tell her that you want to cum on her… she says OK as long as it’s soon. She then reluctantly talks dirty to you until you release your load over her big slutty tits. After you cum you tell her that you’ll help her every month if you can do this again. Reluctantly, she agrees.