Just watch^^
EDITED:
According to rainsong21(thank you :3):
"the bit where aiba's talking, he's saying "i've been waiting since yesterday!" because nino joked before that that the others looked like they were lined up and waiting for jun!lol hope that helps:)"
Note: I do not claim 100% accuracy on my translations. Still self-learning.
DISCLAIMER: All Arashi contents in this video belong to their rightful copyright owner and the channels their shows are broadcasted on. I do NOT own Arashi in any way.　And, please support Arashi when you can^