Choi Hime and Kim Jiwon had known each other since they were in diapers. However, they weren't considered "childhood friends". Hime would always bully little Jiwon, making him carry her bag, tie her shoes and even doing her homework. Jiwon was a timid boy, quite small for his age. He never really had the guts to talk back to her. He was also Hime's neighbor so she would always barge into his room uninvited. However, when they were 11, Hime's parents decide to move to the United States, due to her father's transfer. After being bullied for so long, Kim Jiwon became a whole different person. He became a delinquent.