Friend Sister

Min-woo, who lives with his two older sisters Yeong-ju and Sang-mi after his parents moved back to the countryside, receives a visit from his college friend Jeong-su one day. Seeing Yeong-ju and Sang-mi warmly welcoming Jeong-su, Min-woo feels it’s a good idea to invite his friend to his house. During a vacation, Yeong-ju takes Jeong-su on a tour of the city. After returning home, Yeong-ju, under the pretext of claiming a reward for being a tour guide, seduces Jeong-su, which is witnessed by Sang-mi. Although still a virgin, Sang-mi has always been curious about men, and she decides to take this opportunity to experience her first time with a man. That night, Sang-mi sneaks into Jeong-su’s room while he is sleeping, and after waking him up, she seduces him into having sex. However, Sang-mi realizes that having sex with men is not as good as she had imagined. A few days later, Jeong-su left, saying goodbye to the two sisters…