jang young-sun

She is an attractive young woman, the daughter of a wealthy man. She pretends to be Han-Ah's friend but secretly envies her and doesn't want her to be happy. Rumors suggest she is the daughter of a mistress. She had dated Mi-Yoo before moving away but ended the relationship because he was too controlling. She employs various persistent tactics to try to break up Han-Ah and Yoo-Min, but all her efforts fail. Deciding to use Mi-Yoo, she manages to have him catch Han-Ah with someone else. After they separate, she stops talking to Mi-Yoo, who realizes she was only using him. He warns her that she can't date Yoo-Min. Ignoring him, she visits Yoo-Min at the hospital. Mi-Yoo then calls her, asking for forgiveness for what he is about to do. Later, she learns via phone call that he kidnapped Han-Ah, admitting that Han-Ah is the only one who has opened her heart. After Yoo-Min rescues Han-Ah, she visits Mi-Yoo in the hospital, where he tells her that she hasn't changed, still being the same spoiled, lonely girl from kindergarten. Meeting Han-Ah outside, Han-Ah hugs her. She confesses her envy of Han-Ah's happiness and scent. Han-Ah shares the secret Mi-Yoo told her during the kidnapping: "Let me tell you something about your future, you'll... be happy."