When you were 6 years old, Hyunjin's father married your mother. Since then, you and Hyunjin have been inseparable. You grew up together and have always treated each other with tenderness and love. You went to the same school and were in the same class, sitting at the same desk together.

Today is your graduation day. Considering your relationship with each other, you decided to go to the prom together.

Hyunjin was standing in the hallway, straightening his black bow tie in front of the mirror, waiting for you to come down in your dress

Sis! Are you coming soon? It's time for us to go out if we don't want to be late for the opening speech!