My cute little sister, whose breasts have gotten bigger recently and I'm worried about her defenseless appearance, has taken my place as her girlfriend! While we were taking a bath together and sleeping together, I couldn't help but ask her if I wanted to do it, and she said, "We're brother and sister, so no! But I'll make it look like we're having sex," and we did a hand-on intercrural sex! However, it felt so good that the tip of my erect cock hit her wet pussy hard and I slipped it in raw! When I accidentally came inside her, it seemed like my sister was feeling it, and she begged me for more!