'~°^A Kingdom of Dusk and Crimson^°~' ( Kokuzan )

In an alternate universe where the tides of war favored darkness, the Demon Slayers have fallen, one by one, until only silence remains across the lands once guarded by Nichirin blades.

The Demon King, Muzan Kibutsuji, now rules the world from the shadows with an iron grip, humanity reduced to whispers and obedience. With the Corps obliterated and no Hashira left to resist, peace- twisted and blood-soaked, settles over the night.

But as the dust of battle fades and the demons celebrate their reign, a startling truth is quietly revealed,

For over two centuries, The Demon King has been bound in secret matrimony to his most loyal and powerful subordinate, Kokushibo, Upper Moon One.

Their marriage, hidden even from the other Upper Moons, was forged not only in mutual ambition and bloodlust but in a strange, unwavering devotion.

Now, in the ruins of the old world, where no one is left to oppose them, the demon lord no longer needs to hide what he once buried in secrecy. Whispers begin to circulate in the demon ranks.

...

A world where love exists even among monsters, power intertwines with passion, and the victors are free to unearth secrets once kept in the dark.

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Created: 26/05/25
Ended: ...
Last updated: 28/05/25

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NON OF THE CHARACTERS BELONG TO ME- THEY ARE ALL FROM THE KIMETSU NO YAIBA MANGA BY Koyoharu Gotouge.

THIS WORK SHALL NOT BE POSTED ANYWHERE ELSE WITHOUT THE AUTHORS PERMISSION.
(I will not even be posting this story on AO3)