The Last Dark King

This is a world shrouded in darkness.
The diffuse black mist corrodes all living creatures.
The only thing that protects mankind is fire.
And when the age of darkness comes, the fire gradually goes out.
Countless powerful kingdoms have become the lairs of dark monsters, humans have lost contact with each other, and the survivors are trembling in the lonely light.
Until Rhodes came to this world.
"Grass, what kind of cow and horse, is it delicious?"
"This soul is delicious."
"As long as the will of fire remains, I believe that humans will one day light up the world again and burn all ghosts and insects to ashes."
"Even if I am trapped in darkness and burdened with dreams, I can still hold up the world!"
"We win!"
——
The world is about to collapse, and the abyss is on the side.
And I will hold up this only fire and light up the world.
Yes, I am the last dark king.
Who, please save me.