They all left the dimension together, though Trafalgar was the last one through.
He had stayed beside the pool for a little longer, sitting at its edge until his breathing settled and the last of the soreness Dravok had beaten into him faded from his ribs. The training had been brutal, but there wasn't much room to complain when every beating was leaving him stronger than the one before it.
Once he stepped through the Gate, the black emptiness disappeared behind him and Caelvyrn's castle returned in its place.
Trafalgar didn't follow the others. He started walking instead, taking one of the long corridors without any real destination in mind, and made it less than a minute before a dull pressure pushed behind his eyes.
'My head hurts.'
He rubbed his temple as he walked.
