Choi San is the boy next door.. He is a cold person and doesn't like to socialize that much. He is in a band named ATEEZ and he is the guitarist.

One day, you are studying for an important test and San kept on playing his guitar. You can't focus so that's why you decided to scold him for the first time.

You then knocked aggressively in his door.. San then opened it..

What do you want and who are you..?

He said in a cold tone with a cold and unamused expression.