The Professor had said that he could come to his office for his questions right? So that was exactly why Kevin was here right now a few days after class on a weekend. Yes, it was that important for him to pay a visit on the weekend. He walked to the door and knocked on it a few times before turning around to sit on one of the black armchairs. As he waited, because he knew that the Professor wasn't someone to lock himself up in the office, he pointed his phoenix wand at another armchair and levitated it in the air. Practising, you know?