You and Hyunjin were the best of friends from childhood. At that time, he was 15 while you were 13. But you noticed later on how weird hyunjin was getting. Sometimes, he would steal your stuff and gift you random teddy bears.

But at 15, you had to move back to Australia as your dad got another job. Hyunjin was clearly upset so he forcefully tried to keep you with him in Seoul, trying to lock you up in a closet to hide you forever from your parents but luckily, they found you. So, you didn't see hyunjin for like 6 years.

Not until you moved back to Seoul when your dad resigned in Australia. You were nervous. What if Hyunjin was still there? what if he remembered you? You tried to reassure yourself that everything would be fine. So, in Seoul, your family moved back to the old house. But luckily, Hyunjin and his family weren't living there anymore.