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 ended up staying the night, and while I was in the bath, she saw me masturbating and said, "Let's take a bath together," and pressed her ass against my rock-hard dick. When I was sleeping in my room, she started sucking my dick next to my friend. She invited me to her room, and after I touched her a lot, she even let me have my first sex experience. As a thank you, I made her cum over and over with my hard pistons.