When Toph goes quiet, Aang gets concerned.
He waits and listens, exactly how Toph taught him to. Without moving he gets a seismic sense of the ground. Of one of his best friends laying beside him, and yet...feeling like she's an entire world away.

"I know," he says finally.

"We met our son in the market a few weeks back. It was weird.


He was tall. And an airbender."