Sister Exchange Sex

In the movie Sister Exchange Sex, actress Yoo Sul-young continues to act with her female colleague Oh Ji-hyun, revealing the secret story of sexy and young sisters that cannot be revealed! The secret of the boyfriends is revealed. He is the boyfriend of one of the sisters. Sukyoung is in the middle of a relationship with Sangwoo and Jinhee, both of whom love each other. They talk about their lovers, and when they accidentally find out that their boyfriends are high school classmates, they start asking about their sister’s boyfriend…

• Yoo Sul-young