You once had a best friend, Soobin, who was 9 years old when you were 8. However, one day, you got the news that he was moving to a new country and you felt hopeless without him.

Ten years later, your father introduced you to someone- it was your childhood best friend, Soobin. He remembered you and whispered softly in your ears, "The last time I saw you, I could've lifted you up and put you on my lap. I guess I cannot anymore."

What happened to the sweet boy you had once known?