GS-231 While my parents were away, I was suddenly aroused by the sight of my sister in her underwear, which I had never noticed even when we were alone, and I got an erection! When my sister found out, she asked, "What's the erection? You're still a virgin, aren't you?"

With his parents out, he's left alone at home with his sister... He's used to seeing his sister in her underwear, but he can't stop feeling horny! The older brother, who pretends to be a virgin, can't resist his sister's devilish temptations and confesses that he's never done it... But his sister invites him, saying, "Then I'll do it with you!" The older brother takes the lead and pounding her hard until he's satisfied! In the end, he even does the forbidden creampie!