...Gods in heaven, demons on earth, and a giant floating continent for humans.

The continent that is known as the "Floating Continent of Yggdrasil".
That is, a floating miniature garden of the gods.
A place where the human survivors of the great war live, the continent closest to the realm of the gods.
The Demon Emperor Surtr who has his eyes set on that continent said this to this heirs.

"The one who brings me the Heart of Yggdrasil said to be safeguarded by the goddesses on the Floating Continent of Yggdrasil shall be the heir to my throne. As long as you get your hands on the Heart of Yggdrasil, I will not question your methods nor your past transgressions. You are free to make alliances between yourselves, sabotage, or even 'remove' your fellow heirs as you would any obstacle. Kill and rampage as you wish and prove to me your strength and worth"

Hearing those words, Surtr's heirs, all having motivations of their own, began their invasion of the Floating Continent of Yggdrasil.
Among them, an ostracised member of the demon nobility, Loki, has also decided to participate in the feud for the throne.
To become the Demon Emperor is to stand above and at the very top of every demon.

If corrupting the goddesses said to be as beautiful and elegant as a flower in full bloom will be the key that leads to him gaining the throne, he saw no reason not to participate.

He, who desires the divine, beautiful goddesses.
He, who lusts for power to obtain everlasting freedom.
He, who wishes for the neck of the Demon Emperor who took everything from him.
5 invading demons, and 5 goddesses fighting back.
All the pieces have fallen into place. All that remains is for him to wager his own existence in this battle and fight.

In a continent caught in a whirlpool of chaos and ambition, Loki's own ambition burns brightly.

[From Ninetail]