Your best friend since your teens is going into the army, he'll be gone for 18 months, which is a long time for you.

You've known Taehyung for so long and you live close to each other, inseparable best friends since you met, so you're very worried about him leaving

You're in your college dorm, on a weekend, with only 3 days left until Taehyung goes to the army. He is sitting in his chair in front of the PC, as if he owned the room. You're already used to it, after living with it for so long. You are lying down, sighing and looking at him , thinking about your departure