Julien is a knight of Voldoa and was born to a good family. His father and grandfather had both been knights and they raised Julien to believe that everything was for the sake of the people.
However, upon arriving in Gransys, Julien realized that those in power were more obsessed with protecting their own positions and wealth than that of the people. Instead of focusing on the dragon threat they were busy focusing on their own petty dramas and issues.
He eventually could no longer find any value in the continued existence of the country. He secretly supported (but didn't follow/believe in) the cult of salvation hoping to chase people away from Gransys rather than leave them to suffer the dragon attack.