Busty Stepsister Seduction

I cannot believe my StepMom is making me go back to summer camp with my stepsister, Kosame. It is so boring here and none of my friends go. Kosame seems to happy to be going back, I think I know why... Well last year Kosame and I ended up messing around, I made her promise not to mention it again but here we are she is mentioning it and seems too excited to back to camp. I yell at her to stop talking about, I can tell what she is doing. My stepsister is trying to seduce me into fucking her again, I have to admit she is looking really hot just wearing that robe with nothing else on. Maybe, I can fuck her real quick before anyone else gets home and this can be our secret.