Prophesied

Twenty years after the Great Purge Uther Pendragon is desperate for the location of the magic users that fled his realms, and when his son Arthur captures Merlin Emrys, a prince of New Avalon, it looks like the king will get just that. But can a friendship struck between enemy princes change everything? Merlin/Arthur bromance, Prince! Merlin, Freylin, Arwen, whump.