YSN-397 — My Younger Sister, Who Is About To Get Married, Accidentally Saw Me Masturbating As Usual, Which Made Me Shake Up. She Looked At Me Kindly And Said, "You Can Only Do This Before You Get Married, So If You Want, I'll Help You Out." She Used Her Perverted Techniques To Tease Me To The Max, And I Got A Rock-Hard Erection.

When I was masturbating as usual, I was seen at an inopportune time by my cute little sister who is soon to be married. I thought she would be shocked, but she said, "Big brother, I can only do this before I get married, so let me help you?" and she used the techniques of a professional prostitute to stimulate my erogenous zones. I lost my sense of reason and ejaculated more than usual.