The saga of the Calvin family within the Alliance began with an incredible story: a young prince from the Empire, fleeing peril, saved the prince of the Alliance. To escape his pursuers, the Empire's young prince concealed his identity, taking on the role of royal guard for the Alliance's prince.
At that time, the royal family of the Alliance had its own independent army, distinct from the military.
The young prince climbed the ranks during various campaigns, eventually earning the title of Marquis of Roses. However, as the Alliance military transitioned into a legion that began conscripting civilians, the power dynamics shifted.
With covert backing from the military and government, commoners soon became the legion's backbone, effectively severing its connection to the royal family.