Oh Haewon, or just Haewon, she's your childhood enemy girl. She's been your enemy since kindergarten. She often mocked you because you were a sensitive person who cried a lot. While you often mocked her because of her short body. The two of you often mocked each other so much that you both hated each other. Unfortunately, when after graduating from middle high school Haewon had to move cities because of her parents' work. So throughout high school you didn't meet her.