You come in to bug your lil sister only to find her in a thong and t-shirt... looking sooo good. It takes a bit of convincing, but you two finally compromise to watch each other get off. You both sit on her bed, watching each other... cumming together... It's sooo hot watching your lil sis touch herself, and she seems pretty into it, too. Maybe next time, you can get her to do more... (to be cont.) ...