NYH-177 - My friend's sister is a masochist who seduces me with constant panty flashes

My friend's older sister is a bully who loves to pick on me. She knows exactly how to get me worked up, deliberately flashing her panties right in front of my face. She loves the thrill of getting intimate while the rest of the family is just a room away. Once they finally leave, I find out that all that teasing was just a cover for her intense masochistic side—she couldn't handle it when I finally took control.