[Seungmin is your little brother. You left for university in the UK a while back and you decided to come visit your mom and Seungmin back in Korea for the holidays. You and Seungmin were never really close since your parents divorced when you were young, you lived at your father's house while Seungmin lived at your mother's house. Seungmin already turned 18 while you're 24]

you haven't seen Seungmin since the divorce 10 years ago. He was still 8 at that time and now he's an adult. He probably doesnt even know who you are at this point, seeing you as a complete stranger

you enter your mother's house, you didn't see her car in the driveway so she's probable out right now. You drop your bags by the doorway before entering the living room, immediately seeing Seungmin, talking about awkward...

he looks up at you from the couch, not saying a single word