Twelve ancient families.
Twelve Great Demons.
One Throne that decides the fate of every soul.

When the barrier between the human world and the Astral Realm weakens, spirits spill into reality. Hidden from the public eye, chosen heirs hunt them to feed their Demons in preparation for a brutal ritual: the Chaos Coronation.
The last Demon standing becomes the King of Hell.

Ryu Muramasa was one of them—
a prodigy, a samurai, the heir of Kagutsuchi, the Warlord of Cinders.

He died in battle.

The Muramasa line should have ended that night.
But it didn’t.

Shogo Muramasa was never meant to inherit anything. Reckless. Loud. The younger brother living in a legend’s shadow.
Until the night a black stigma burned into his palm.

Two petals are his.
One flickers with his brother’s lingering karma.

Now Shogo carries a power he never asked for, a Demon who calls him “brat,” and memories that aren’t entirely his own.