In the inception of Castille, dragons were a real threat that people dealt with often according to history books. Even more than the history taught in schools, the scarring from times when dragons burnt down Coeurvalle was still present in old buildings. The marks were present most obviously in the oldest part of the palace and a few churches in the surrounding areas.
It was a brief reminder that, while not seen for over a century, dragons were still out there. The northern war gave way to a young dragon and Desmond became their hero. Many thought that was the end of that.
However, as the large body of a fully grown dragon took to the sky, clearly coming from the direction of Letum, the hearts of those in the capital and any northern territories were struck with fear. It was an unfathomable sight that most expected to never see considering the last sighting of a fully grown dragon was generations before.