Abyssal Awakening - Chapter 698: Astrelya’s Declaration

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

Based on the popular Vocaloid song .

Rin, a young angel (presumed female, but angels don’t have clear genders) falls in love with a young human girl, Miku. However, their love is considered taboo, and so, Rin makes a deal with the devil to be reborn as the human boy, Len, in order to be with Miku. However, their happiness together is short-lived, and even that soon ends in tragedy.

The curtains to an epic of a continental power struggle are pulled open. There’s an entire empire in Dane’s heart!

Churches, tribes, prisons, forests, castles, graveyards, abysses . . . He controls the bases of all seven races in the fantasy epic war game, [Heart of Dynasty]; right before his eyes is the throne of a monarch!

Elf rangers pull your bows, the heavy-armoured knights are charging!

The Caesar Empire has collapsed. An era of war for the new ruler arises. The Kingdom sends endless expeditions; the Northern Alliance is unwilling to be excluded; the abyss and death begin to stir as they gaze upon the continent. Plots, tricks, religious wars. . . amidst these battles, only the victor can be called powerful!

Dane, holding a blade dripping with blood, says with bared teeth, “f*ck! Let me use my ass to see whether that seat at the top is comfortable or not!”

- Description from Novelupdates