Step-Sister Seduces You Into Financial Blackmail

We need to talk my darling step-brother. Are you getting nervous? Haha! Good. You may believe I haven't noticed you perving on me throughout the house, but I have. I always feel your gaze on me. Whenever I bend down, you attempt to glance up my skirt. I always catch you trying to get a glimpse of my little tits. I have ample knowledge on this issue. Why do you think I don't wear panties or bras at the house? I'm extremely aware of how much of a pervert you are for me and how you jerk off to me in your room. That is something I intend to use against you. Does the fact that I'm aware you're a nasty pervert turn you on? I mean, I could tell our step-parents at any time, couldn't I? I have a really fascinating solution to this tiny thing you have for me. Do you want to know what it is? I won't inform our step-parents about your secret activities if you obey.