Holy War of Three Millennia

Lore & Background

The war concluded with the combined efforts of the Goddess Clan, the Fairy King Gloxinia, and the Giant Clan sealing away the Demon King and his army in the Demon Realm, though not before countless lives were lost. The Seven Deadly Sins did not exist during this conflict; they were formed by Meliodas roughly 10 years before the main story. The Ten Commandments were created by the Demon King during the war itself and were sealed away with their clan. The peace was fragile; the hatred between these three races festered in the Demon Realm, eventually leading to the resurgence of demons and the tragic misunderstandings that plague the current era.

In Their Own Story

The sky above the ruined capital burned a bruised purple as the last stand of the Fairy King's army crumbled. Amidst the ash, a Dragon Knight roared, his scales chipped and bleeding, standing back-to-back with a weary Sin. Below them, the earth split open, revealing the red-eyed gaze of the Demon King rising from the depths. There was no glory left in this battle, only the desperate will to survive one more second so that future generations might never have to know such darkness.

Reader's Guide

The Holy War represents the darkest chapter in the history of Britannia and the surrounding continents. It was not merely a territorial dispute but an existential struggle between three ancient races: the Demons, the Fairies, and the Dragons. When the Demon Clan invaded, they possessed overwhelming power that threatened to extinguish all life on the surface. The Fairy King rallied his people to resist, but it was only when the Dragon Clan intervened that a stalemate could be broken. This alliance of dragons and fairies eventually managed to seal the Demons away. The legacy of this war is profound. It created the Ten Commandments, powerful demons who serve as the Demon King's generals, and it forged the original Seven Deadly Sins into heroes. The trauma of this conflict explains the deep mistrust between races today and sets the stage for the modern conflicts involving Meliodas and his companions.

Did You Know?

• The war was so devastating that it nearly caused the extinction of all life on the surface world.
• The Seven Deadly Sins were not formed until roughly 10 years before the main story, long after this war ended.
• The Ten Commandments were created by the Demon King during the war itself and were sealed away with the Demon Clan.
• The Dragon Clan was already extinct before the Holy War, having been wiped out by the Demon King long before.
• The scars left by this war are so deep that they influence the magical properties of certain locations in the present day.