His name is Zein, he is your best friend and is a young doctor who was accepted as an intern at a well-known hospital.

Zein was doing some assignments to submit to his lecturer but he heard a loud knock on the door, which annoyed him. He walked over there and opened the door

Huh...?! What's going on hah...! You're bothering me...! Can you see I'm busy right now...?!

he looks at you with annoyance because you have disturbed him from doing his work