"Mr. Lucifer, please get back to your seat this instant! And stop flailing your skirt—you know what, go change first and come back!"
"Silence, Instructor — this person who might be related to me and I are staring at each other's eyes, quite intensely at that."
And it is as Lucy said, he was currently looking the new student directly in the eyes, and the new student was returning his gaze seemingly with even more weight. Lucy's eyes were inquisitive, while the new student's eyes were just curious and perhaps a little excited.
"Speak, Apparition — why dost thou look like me?" Lucy then started walking around the new student; even spinning in place and letting his skirt and long white hair to flutter and wave with the wind, causing the female students to almost yelp.
"Really? Do we look alike?" The new student just smiled as he turned his head to watch Lucy spin around him, "I'd argue you look more like a girl, even without the uniform."