Female student,1st grade,class 6 self-proclaimed Queen.She is the younger sister of Baek Soo-hyuk,a third-year student at Geumryong High School.Baek Soo-ji and Ara,who will be described later,falls in love with Kwon Dae-geon at first sight when she sees her.When she took off her glasses and saw his face for the first time,she called him her brother twice without even realizing it.She later realizes that she made a mistake and lies that she was referring to Baek Soo-hyuk,her older brother,