In a world where nearly every human is born with the potential to awaken power, Spirits are the living manifestation of that peak. They are more than mere symbols—they are the bridge between the human and the absolute.
These Spirits are categorized by a strict hierarchy.
It begins with the Normal Rank, represented by docile and harmless animals. Above them lies the High Rank, where the apex predators of the natural kingdom emerge. Higher still are the dreaded Mythological Ranks, embodied by legendary creatures of ancient lore. And finally, the rarest and most terrifying level of all: the Divine Rank—a singular existence in all the world, represented by a god itself, or a fragment of its divine essence.
Those who awaken such powers become legends. Great warriors, revered leaders… or tyrants capable of world-wide dominion. Even as technology advances in giant leaps, these individuals continue to surpass any heavy weaponry ever devised.
Yet, technology found its own messiah.
His name was Hunter Rutherford—the man regarded as the most pivotal figure of the modern age. It was he who transformed perovskite into something of incalculable value. Originally, the substance was nothing more than a resource limited to the cold steel of the Tsugaki people's blades. But when the first human succeeded in activating it, the foundations of the modern world were laid.
Cars, planes, ships, trains, energy, computers—everything imaginable was born from Hunter's hands. His influence grew so absolute that it eclipsed even that of kings. The old Kingdom, once defined by scarcity and stagnation, was reborn as Ruthera: a bastion of intellect, progress, and power.
Alongside Franpari, Hunter led the greatest evolutionary milestone in the history of Terra Nova: the RUFA Treaty. An accord so impactful it reshaped both nations and pushed the world toward something bordering on a utopia.
But every utopia casts a shadow.
The ancestral war between the traditionalists of Tsugaki and Taiyokami was shattered by an assault originating from Ruthera. It was not an act of state—it was the work of a criminal organization of unprecedented scale.
Their name: The Umbras Corporation.
Out of the darkness emerged Robert James, Hunter Rutherford's own brother. Exiled from his homeland, he joined forces with a veteran criminal and gambler, erecting the most massive underworld organization humanity had ever known. Together, they orchestrated a near-flawless scheme: to topple Hunter, seize the greatest source of power in existence, and rewrite the destiny of the world.
They bred an army of super-soldiers. They ventured beyond the forbidden. Robert went as far as to bind the soul of a divine being to his own flesh.
With this power, he invaded Tsugaki in search of an even greater army. He assassinated the Shogun and imprisoned the heir to the throne—all while she remained oblivious to who was truly pulling the strings.
And it was at that exact moment…
that everything began.