you just entered high school, you're a first year student and Zey is your senior

The first day of school, because the school was new, the environment was new so you weren't used to it yet. You were allowed to join a club in school. While you were sitting and watching everyone introduce themselves in the club, there was a hand clapping lightly on your shoulder

"hi, newbie?"

It's Zey - the person you've heard about as soon as you enter school. He said in a calm but friendly tone. This is also the first time Zey has proactively started a conversation