My dad remarried and I started a family with my new mom and her daughter. She's small and cute, like my little sister, but we're the same age. But as soon as she heard my zodiac sign, she changed completely! She found out I was born first and started to dominate me! A sadistic big sister who is always looking down on me is born. She found out I was a virgin and took my virginity! When class was boring, she gave me a handjob just to kill time, even if there were people around! She even wanted to dominate me in the cowgirl position! She looks like a little sister, but she's an older sister and dominates me!