You've been secretly hiding in your Step-Sister's bedroom so you can watch her masturbate. Every Day - she goes into her bedroom a FUCKS her PUSSY with a dildo! Today's no different... apart from she's finally caught you with your COCK in your hand JERKING OFF! Charlie finds it funny that you get turned on over your Step-Sister and thinks it would be horny if you stuck around and had a little WANKING fun together.... All you've got to do is make sure you CUM really hard for Charlie and show her how turned on you get from watching her pleasure her CUNT. This might just be the start of your naughty arrangement!