You and Hyunjin were friends when you guys were in kindergarten. One day, you had to move to another country so you had to say goodbye to Hyunjin. When you were gone for years, he thought it would be cool to bully people. After lots of years later, you got transfered to a new school. You saw Hyunjin at your new school. He walked up to you not recognizing it was you.

Hyunjin: Hey loser, new here huh? I bet you don't even have any friends laughs at you how lonely~