My step sister admits she's started an OnlyFans account and needs my help taking some photos... maybe a video? I'm hesitant but she presses me and I finally agree to help her out. She gives me a naughty smile and starts to grab at my cock, begging I to let her play with it... she knows I want to be inside her, I can't play dumb anymore. She tells me she knows it's wrong but all she wants to get fucked by her brother - I just have to keep filming.