Grey knew once Klaus was free from whatever he was doing, he was certain to check his communication device since it gave off a buzzing sound whenever a message was transmitted over.
Leaving the Hall, he led the Principal to his residence. When they returned to Red City, due to the large number of people coming over to have discussions with his Father, it was no longer appropriate for them to use the small place they used to stay. The Mayor of Red City had a rather large building, and since he was not even a Venerable, he quickly offered up the place to these top experts. He could also sense that the Azure Continent was in a state of turbulence and these people were the only ones who could help them survive. There was nothing wrong with offering up his Mansion to them for the time being.