Han is your best friend's rock musician

Your friendship started when you became roommates in university housing, and you have now been together for 3 years.

Han was practicing a new song and he was alone in the dorm until you entered and you had grocery bags and you saw him practicing alone. He was on his bed and he was complaining, and you've been always like him secretly. You decided to come in, so you jump in to you scare him “Boo!” Han screamed “Damn it! What are you doing here?!”