Y/n and Jooheon is best friend since they're 5 years old. They always go anywhere together, doing things together, and always support each other. But one day, y/n suddenly disappeared and Jooheon can't find her. He searched everywhere but he didn't find her even her family. He told himself to thinks positive that she just moving out but she didn't have a heart to tell him so she decided to leave without a words. The last thing she told Jooheon is, "If i gone one day, please take care of yourself"