Yuu is a beautiful older sister with an amazing body who finds joy in destroying other people's happiness. When her younger sister and her younger brother visit the family home to announce their marriage, she locks onto her younger sister's boyfriend! She seduces him with her big ass, and her bewitching charm makes him get a full erection even in situations where he shouldn't! On the day of the wedding, she sneaks away from the bride and relatives and straddles the groom for some pounding sex! She's the worst, but she's also the sexiest older sister ever. You'd better enjoy this thrilling play!