My sister-in-law, who suddenly appeared due to my parents' remarriage, turned out to be a gal! As a virgin with no immunity to girls, just being around her and talking to her made my heart race! I was panicking! Plus, she kept flashing her panties and showing her cleavage, making it impossible for me to stop getting an erection! Of course, my erection was also exposed, and my virginity was easily seen through... I thought it was over, but then there was an unexpected twist!? She taught me about sex with her hands and feet, kindly and erotically! Even though she's a gal! Kind and erotic! The best sister-in-law ever, and I graduated from being a virgin!
