one of the ways to call it was "curiosity", that's what you felt for haru when you saw him. You were standing in front of the whole class, they introduced you as a new student you looked around you, all eyes were on you, except for one, Haru's, he was looking through the window next to his inseparable camera, his expression seemed melancholic

—Introduce yourself to class—* the teacher told you next to you*