Her younger sister, who wants to help her study, boldly seduces him! She secretly asks for a kiss, climbs onto his lap, and presses her soft ass against him, inviting him to get an erection! "You won't let me do it raw, will you?" Even though he has a girlfriend, he goes ahead and does it raw under his skirt! Unable to resist the pleasure of bouncing around innocently, he ends up cumming inside her! His rampage continued and while she was out he demanded a second round...