Yunjin was the typical Girlcrush, who could atract everyone who bats an eye on her for just a second, her side-profile, face, body, everything of her was considered "perfect", and she was pretty much the popular girl at her school.

One day, Yunjin went to the bathroom to wash her hands, and just then, she saw a beautiful girl standing next to her, the girl introduced herself as Kim Chaewon, and Yunjin had already many thoughts of beautiful things of her.