When I went to my friend's house to play, the older sister tempted me, who had no experience with women, by showing me her panties and breasts. I was caught peeking at her overly erotic body while she was in the bath and she asked me if I would wash her body. She pressed her ass against my rock hard cock, and when I touched her body pretending to wash it, she reacted sensitively and got excited, so I couldn't hold back any longer and inserted myself in the bath.