Once upon a time, there was an age-long battle between humans and demons known the Great War against the Demon Realm.
The two races fought fiercely for their survival, and the war finally ended when a party of heroes defeated Vallier, the Demon King.
Kaboom.
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Main Character's POV
Hello, I live in the Demon Continent. The land of ash skies, endless night, and the towering citadel where the Demon King lives and rules over everything and everybody.
No one dares speaks back to him.
And yet, lately, the humans, guided by their fickle gods and led by their so-called heroes have started to win for some inexplicable reason.
"Every day is so boring," I muttered as I watched their armies breach our borders. "I feel indifferent about everything. Isn't there anything that could make life even slightly entertaining?"
However, lately, the humans led by their heroes guided by their Gods, have started an onslaught and was finally winning.
From the highest balcony of the Demon King's castle, with the smoke of war curling up toward me, the demon castle rumbled as the gates were finally breached and the fight of the heroes against the Demon King has began.
While that was happening, I entertained these thoughts without urgency, without fear, just mild curiosity.
Who am I, you ask?
I am not the Demon King.
I am not his right hand, nor his left.
But if one were to rank us, I would be the second-strongest existence in this land.
In a story, I suppose I would be the "Hidden Boss."
The truth is, I don't know what I should do.
Unlike the Demon King, I feel nothing for this world, no loyalty, no greed for conquest or power. If anything, I just feel tired. I do not feel any purpose.
I don't know why I even exist.
I look from the veranda and watch. Before me, I cannot see nothing but the barren lands and the dark forests of the Demon Continent.
I try to remember the color in the human realm. I miss it.
Should I kill the Demon King and leave?
…Tempting, but unrealistic. He'd annihilate me before I even got the chance.
So I sigh, and I wait, and I watch.
Then, in a twist no demon had expected, the humans defeated the Demon King.
Just like that, a thousand years of war ended—and the world entered an era of "peace".
And so, with nothing left to tie me here, I left.
Retired from demon life.