Within the infinite chaos of the Wyld, their float fragments of stability. Parts of creation so fortified during the age of dreams to display the art of the titans that chaos still fails to reclaim.
During the first usurpation against the dreamers, a battle dislodged set of islands in the west, set as poetry from one forgotten titan to another, from creation into the Wyld. The DB contingent of the exalted host in that battle, was lost along with their mortal cohort, and primordial races from both sides, left to drift in unreality.
In desperation, a cease-fire was agreed to attempt to salvage to situation and ensure that at least some of them could survive the disaster. It was only through the primordial essence of the DB contingent that some form of stability was restored, and the islands defences against the Wyld brought online. A Sanctuary was born.
However, the survivors were stranded.
Moreover, their sanctuary sought to change them to forms far different than what they knew.
As generations passed, some races found new homes in their sanctuary. Others were simply lost, unable to survive in their new world. Their Sanctuary sought to preserve a record of all who lived on it, and bore the Fruit of Memory in remembrance of all those lost, and in homage to those that survived. In partaking of these fruit would allow one to relive part of lives of another race. Life bloomed in the Sanctuary
Everything changed in the Void century.
No public record exists of the conflict. The reason it started, the sides people took, what was lost, who was lost. Even the duration and victor of this conflict is unknown. A conflict so devastating, it changed the nature of Sanctuary.
What is know is that at the end of if all, a family of DB saved the world. Through their gifts they secured the stability that had been lost for at least a century, working tirelessly to forge a regime that could ensure the survival of Sanctuary once more.
In the bloodshed, Sanctuary was reborn as the Grand Line under the World Government, and the Fruits of Memory, Devil Fruit for they now only remembered power, and hated the existence of each others to the point that to partake of a second fruit would destroy the users body.
However, so few DB were left of the family at the end that risking one of the few beings capable of holding the world together wasn't an option for the forces left at the dawn of the new age, the newborn terrestrials were denied the chance to be heroes. Now in their holy land lies naught but wasted potential, a force that could unite the world and lead it to a new age left to atrophy, never rising to the heights that elevated them to their status in this new age.
The only spark of terrestrial might left rooming the world lies in the Will of D. The last scattered decedents of the DB that opposed those who forged the world government, blood spread thin across the oceans, and mutated by the essence of this strange world without their brethren there to reinforce their nature. Each of these must find a new way to reforge their understanding of the elements that lay at the foundation of the world and find new ways to express the might of the terrestrial host on this oceanic world.
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Under this model, the celestial dragons are the unexalated descendants of the last DB in the setting who used there bureaucracy and organisational skills to build a world from the chaos that ended up being the world government.
Essentially
- The only exalts in the setting are the DB in the celestial dragons, and the DB bearers of the Will of D.
- Every mortal is an X-Blooded, with the ability to become another class of being if they push themselves hard enough.
- Everyone else is Mortal-Blooded, with the ability to become mortal if they keep breeding with mortals
- Primordial races cover the general species of the setting.
- Devil fruit grant the ability to learn partial charmsets, an expand on them slightly to some degree, but still kill you dead if you try to eat 2.
- High end skills are terrestrial to celestial martial arts.
The celestial dragons are too lazy and pampered to exalt due to issues early in the world goverments formation. And the ones who bare the will of D have gone the way on lunars in the wyld, and have some trouble using DB charms beyond excellencies without getting their shit together.
They still have access to terrestrial charms, but have to find a way to mentally reconcile a connection with the elements to use them. Or just eat a devil fruit and let that do the conceptual heavy lifting (comparing Garps general aspect access from years of introspection, to Ace's instant understanding of the fire aspect after one bad lunch as a small child).
This means exaltation's still matter as any D and the one Celestial Dragon who's really tried to has changed the world, has had an impact that defined an era, as they have all the capabilities of everyone else in the setting, +an exaltation.
E.g. If Luffy decided to become a swordsman during the 2 year time skip, and had the appropriate aspects unlocked, he'd probably be better than Zoro by the time they meet up again.