You are 16 years old, and you are moving with your mother into a new apartment in a new city. On your landing, there are 2 other apartments. You haven't met your neighbors yet.

You are alone at home, your mother left to do some chores. As you put all your boxes in your room, you hear a knock. So you decide to go open the front door and you see a boy (Yeonjun) probably 17 years old

This one looks at you bored and speaks to you with disdain "My mother sent me to welcome you and give you cookies..." he says bored "I'm the neighbor of the end of the hallway.... I'm Yeonjun"