(Yuri, pure love. The romance will develop very, very slowly, but there won't be any gross plotlines.)
Livia, a blonde hero from another world.
Fei'er, a cowlicked Demon King sidelined by the Four Heavenly Kings.
When the war ended and the cries of anguish fell silent, humanity no longer needed a hero.
The leader declared, "When peace arrives, every potential threat must be eliminated."
And so people stopped praising her. The heavens unleashed their fury, and rebellion flared at once.
But just then, the fugitive hero ran into the imprisoned Demon King, like kindling meeting a flame.
The hero wanted to threaten humanity in the Demon King's name; the Demon King wanted to use the hero's strength to escape.
So the two made a promise to "elope." Their letters drifted across the world, stirring up another mighty storm.
The war was over, but the struggle was far from finished.
The story of the hero and the Demon King, which should have ended, was reborn that very moment.
Except...
"What!? The hero and the Demon King eloping was supposed to be a joke, wasn't it?"
How did the two of them actually fall for each other!?