Timeline
000 — The Malicious Prophecy
The very beginning... when the Fate Makers found their first Author.  The one they chose to bear the first Crown of Reaity was a young human girl named Alisa.  Being granted the power to manipulate reality, she bestowed this power upon those closest to her, imagining her made crown bearers to rule reality beside her.  However, it wasn't long before the powers of her own crown would begin to corrupt her and the hidden dangers of careless reality manipulation would make themselves clear to the other crown bearers.

Frightened by the departure from and gradual decay of the reality they knew, the other crown bearers sought to put an end to the powers Alisa had brought into their world, using the very crowns she had given them to do so.  Enraged by their betrayal, Alisa fought back, killing many of the crown bearers in the process and bringing mass destruction upon their world.  At the end of a difficult struggle, it seemed the surviving crown bearers would be victorious, clinging onto what little remained of their world at that point.  Alisa would not allow them even this, though, as her final act on the brink of death would be her own destruction along with the destruction of all reality itself.

Her corrupted soul would go on to become the first Grief within the Fate Makers' continuity, known as Moon Setter, and the empty shell of that ruined reality would come to be known as the Nth Dimension.
001 — The Twelve Doors
Things were going well... As the Fate Maker's new Author began to exercise their new powers one universe became two, became many.  With each new universe created, a door appeared there in the Nth Dimension.  In total, twelve doors were created, each leading to a unique world.  With more use, the second author began to master the powers of their crown in ways the first author never had the chance to.  As a fledgling caretaker, the joys of creation alone were enough to offset the burden of using their crown, happy enough to create and exist in isolation...but this would not last forever.
The First Author
Caido
01
02
03
04
05
06
The First Universe
Alice
The Beginning of an End
The Fuzzy Dream
A New Era
Dark Apotheosis
Era of the Crybaby God
000 — The Second Author is Crowned
In the empty husk of that ruined reality... only one soul remained, the forgotten playmate and younger sibling of the First Author.  Without much other choice, the Fate Makers turned their favor to this sibling.  They were a young child, a strange child...but that made them all the better as a potential candidate.  Slowly, the Fate Makers extended their grasp on this child's mind, until the fated day came where the child would unknowingly make the decision to accept their favor.

It started with a book, which lead to an idea, which quickly formed into a fantastical world full of depth and life that was all their own to mold and shape.  Such a fantastic power that could be all their own, that was the Fate Maker's promise to them, a promise they weren't even aware was being made to them. 
002 — First Signs of Decay
It started as a feeling... and then it became something more.  A persistent, hollow feeling in the second author's chest soon became a weeping wound.  Like a leak, a black substance seeped from their chest, viscous and covered in eyes.  Despite their best efforts, they had expended themselves the same way the first author had, and were now facing the consequences of bearing their crown.  As multiple as their universes were, they had still failed to establish a feedback cycle strong enough to offset this gradual decay.  However, at this point, they had adopted a habit of simply ignoring any pain in hopes of weathering through it, as to not incite the guardians' wrath on top of it all.

Accepting this new state of being, the second author named this vaguely sentient mass 'Huckleberry', with full intention to simply live with the growth, unaware of the true gravity of the situation.  Assuming it to simply be a result of stress and that it would eventually go away, they were unaware that this strange mass of eyes was the decayed remains of their heart which was now leaking out of them.  As long as they did not react, neither the guardians nor the Fate Makers (who the author was still unaware of at this time) cared, and so the author assumed that their state wasn't any grand cause for concern after all.

However, as time went on, 'Huckleberry' did not go away.  Instead, it continued to grow and develop, its eyes becoming less dull, its ambiguous shape attempting to form into something more coherent.  All the while, the author continued to decay under the burden of their crown and the stressors of their role as an author, possessing a human mind in an increasingly inhuman and rotting body, still without a strong enough feedback cycle to offset the crown's effects.

They would soon find themself on the edge of oblivion, facing a similar fate to the First Author.  The Fate Makers knew this might be a possibility, but thanks to the guardians breaking their spirit, the Second Author didn't possess anything close to the First Author's destructive power, and so was not a risk of destroying what little was left of the Fate Maker's reality.  They would die...and no one would care, leaving this world without having contributed a single meaningful thing.  They did not want this.  They were not ready to die having lived a meaningless life, but what could they do?  With a painful, twisting feeling in their chest as their heart tore away from them, they fell to their knees, praying to some unknown god, calling into the empty abyss that was their domain..."Somebody, help me...please-"