There was once a time when light and shadow shared the same sky.
Magic was seen as a divine gift, and demons were cursed as creatures of ruin.
Yet few knew the truth — that demons were nothing more than reflections of humanity's greed, fear, and desire for power.
A thousand years ago, a being known as the Demon King gathered that darkness into himself.
His purpose was not destruction… but balance.
Still, mankind feared his power — and from fear was born betrayal.
The humans united, forming an army of so-called "Holy Heroes."
Together, they defeated the Demon King.
But victory came at a cost: the world itself was torn apart.
The Upper World bathed in light,
while the Underworld was drowned in endless shadow.
Centuries passed.
The name of the Demon King faded into myth —
but his bloodline did not vanish.
And one day… that blood awakened again,
quietly, within the veins of a single child.
A child destined to ignite the fire of vengeance
and reshape a broken world.