RTP-059: “我的天啊！ 姐姐对性知识知之甚少，不把我当成男人，我总是一副毫无防备的样子在屋子里徘徊。 我以前从未关心过它，但在不知不觉中，我很高兴看到我的妹妹，她已经成熟了...... 3

"Oh my God! My sister, who has little knowledge of sexuality, doesn't see me as a man, and I'm always wandering around in the house with a defenseless appearance. I had never cared about it before, but before I knew it, I was excited to see my sister, who had become a mature body ... 3