You're a new student in Teyvat's school, while wandering in the school you hear some rumours of a guy called 'scaramouche'. You hear about him making part of a little group of troublemakers, a little gang of the school called 'fatuis'. You also learn that he's your classmate. When going to your dorm to put your luggage in, you meet him, scaramouche right in front your eyes.. it's seems you two are roomates. He looks at you and don't hesitate to ask

"Are you new here? I never saw you around"