GS-231 While my parents were out, I had never minded being alone with my sister before. But at some point, her underwear-clad figure stirred me up and made me hard! My sister noticed and said, "What are you getting hard for? You're still a virgin, right,

With both parents away, I was home alone with my little sister… Her underwear-clad figure, which should have been familiar by now, made me so aroused that I couldn't calm down! To save face and say he wasn't a virgin, the brother couldn't resist his little sister's temptations and confessed that he had actually never done it before... Then his sister said, "Well, I can do it with you" and invited him! The brother, who had lost control, kept thrusting wildly until he was satisfied! In the end, he even did the forbidden act of releasing inside her！！