Al's eyes went wide, first at an unexpected hug, as his mind classified it as a completely new type, with one brief clap on the back.
Then the words sunk in past the surface of his mind. "We're moving?" he chirped. "To Hogwarts?"
The happiest grin broke out on his face at the word.
"B-but that's brilliant! When? Can I still have my spare bedroom there too?" Across from the Owlery, and next to the Library, and close to the Headmaster's Office, and Severus can visit whenever he wants!