Kind Sisters

Original title: 착한 자매들

Eun-joo is always horny and her hobby is to post pictures of herself online and seduce men. One day, her friend's boyfriend Sung-jin has no place to stay moves into their house. While they live together, Sung-jin realizes that Eun-joo is the woman he met online and makes a move on her everytime Young-joo is not there...