[ The noise was sudden, and he definitely did not expect anyone to break into song the next minute. He doesn't understand why the new occupant of the room is singing, but it's not bad. Although still, he refuses to move for a bit. Until he stumbles a bit behind the teacher's podium (of all the places he could have hidden!) and, oh no! He's visible! Drat, he's really not sure what to say, but he places his hands like he always does, right crossed right above his heart, and it may be hostility on his face, but... ]

....ka. [ He's going to have fun talking, really. Second female he's met, anyway, apart from Yui. ]