As context, the story told here is set in the world of the game Fire Emblem: Three Houses. The events of this game take place on the continent of F贸dlan, divided into three great nations: The Empire of Adrestia (in red), the Holy Kingdom of Faerghus (in blue) and the Alliance of Leicester (in yellow). The events of this story take place in the year 1181 from the founding of the Adrestian empire.
The current representatives -or either future and/or deposed- are Edelgard von Hresvelg in the Adrestian Empire, Dimitri Alexandre Blaiddyd in the Holy Kingdom of Faerghus, and Claude von Riegan in the Leicester Alliance. The first was proclaimed a few months ago. The second was recently deposed. The third, meanwhile, would be the future heir to said territory once his grandfather passed away, which would happen at any time.
The Church has maintained the stability of the continent during these thousand years, achieving a status quo among the different noble families, the majority of which possess and inherit, generation after generation, brands called Crests, magical brands that allow them to obtain powers over the human and that make them compatible with special weapons, called the Heroe's Relics. In turn, the Crests on many occasions have been named coincidentally with the noble families of F贸dlan.
Both the Crests and the Relics were originally held by the ten heroes, representatives of the main noble families opposing Seiros. These were led by Nemesis the Liberator, who tried to conquer the continent a thousand years ago, facing Seiros in the so-called "war of the heroes". Currently these families live in a delicate stability, holding high prerogatives in each of the nations of F贸dlan.
In the Monastery, in turn, stands the Academy of Officers, an entity that trains students from all over the continent in issues of diplomacy and war, forming three classes for this: The class of Las Black Eagles, made up of students from Empire; the Blue Lions class for those from Faerghus, and the Golden Deer class for students from the Leicester Alliance.