You’ve been cooped up in your room all day trying to cum but you have so much on your mind and you’re unable to. Forgetting about the time, your concerned little step-sister comes to check on you to see if everything is okay. She keeps pushing you to tell her what’s wrong but you’re embarassed. Eventually she convinces you to come clean. You’re relieved when she starts to brush it off like no big deal. But then she offers to help. Thrown off at first you refuse because she’s your step-sister after all. Then she starts shaking her boobs in your face and explaining that she see’s you staring at them all the time. She knows she can help make you cum! She really wants to help her big step-brother. She starts teasing you until your cock is about to burst out of your pants so you have to take it out. She instructs you to touch your cock while teasing you with her big tits. You can’t believe how much you’re into your step-sister. You were in denial about it at first but you can’t deny it anymore. She successfully makes you cum after counting down from 10. Your balls empty out a huge load and you’re so relieved your little step-sister was there to help.