Aurora/Chronology

Mysterious Past
Not much is known about Aurora's past since her memory was fragmented. According to herself, she was a tearful girl isolated from everyone alone in a research area, unknown to her, at the mercy of some experiments by some bad scientists (presumably, the original members of the Cult of Diablos). According to Beta, several natural disasters that struck the world in the distant past were, in fact, caused by Aurora.

At some point in her life, as Alpha speculated, believing that her Master Cid knew, Aurora transformed into the Demon King Diabolos (although it is not known how or why), and began to cause destruction in the world until that was defeated by the Three Heroes of the world sent by the Cult, where it turned out that the Hero Olivier cut him her demonic left arm. But before dying, she unleashed a powerful curse on the them and their descendants, which provoked that the magical power of their bodies went come out control, causing them to begin to mutate horribly and in the end they became rotten monstrosities and then died, (it is not known if he did it intentionally or not). His amputated arm was still alive and the cult sealing the arm used powerful artifacts to immobilize it inside the Sanctuary, to carry out their experiment by extracting Diablos Cells in order to make Tears of Diablos, which will grant tremendous power and immortality.

A short time later without knowing it, a fragment of her being was trapped inside the sacred Sanctuary of the cult, becoming a prison and storage of past memories of Aurora, the Three Heroes and of the Cult of Diablos's member. She was locked up there for centuries (according to her, since she does not remember it but she supposes it), until that he will find someone with enough power to free her, in which the cult used her and the Sanctuary, to perform what would become known as the "Goddess Trials".

Sanctuary Infiltration
Nothing is known about Aurora's past except that she was a war orphan. Very few members among the church know of her story. She first appears as a memory when Shadow is forced to participate in the goddess trial at Lindwurm. Shadow defeats Aurora and uses the ensuing chaos to flee the premises.

Later, Cid Kagenou is surprised when a magical door crosses his path and stops him from going further. Cid opens the door and finds Aurora chained. He reluctantly saves Aurora who admits that she has been imprisoned for over a millennia. The two work together to escape the prison, which is actually a labyrinth of memories. They are arrived at the chained door with the Holy Sword. But, they were assailed by Acting Archbishop Jack Nelson and the memory of Olivier, but Cid defeats them and destroys the core of the prison, which is actually Diablos's left hand.

The prison is destroyed and Cid has a conversation with Aurora. Aurora tells him that she will cease to exist, but doesn't regret it at all. She also reveals that she was the one who summoned Cid and is glad to have met him. Before disappearing, Aurora tells Cid that if he ever finds the real her, he should kill her. Unknown to Cid, Aurora is the true identity of the great demon Diablos.

Red Moon Incident
When Claire went to the top of the red tower of the Lawless City, to rescue her brother Cid, (unaware that he was not in danger), Claire was gravely wounded by the Vampire Queen Elizabeth and she began to experience a type of blood curse similar to "Demon Possession", while the others fighting while she was unconscious. Aurora appeared to her in a sub-space inside Claire, starting to talk to Claire and helping her with her current state, giving her a spell that will allow her to control the 2 types of blood that flow and now inhabit her body, to later provide her support in combat.

By borrowing Claire's body, Aurora joins the battle manifesting a slight change of character Claire's eyes color from red to violet, with a portion of her power, enough to slow down, damage, and push back the vampire queen Elizabeth, until Claire's body she has possessed reaches its limit due to the magical pressure exerted on it. But luck of all and as Aurora expected, Shadow appears to face and defeat Elizabeth once and for all.

But then at the end the battle the next day, Aurora disappears again, leaving the mark of the Spell on Claire, so that she can help her in the near future.

Oriana's "Black Rose" Civil War Wedding Incident
Later, after learning of the existence of parallel universes from Mordred the 9th Seat Knight of Rounds, Beta questions him whether Aurora also came from one of these other worlds. However, he claimed that her assumption was false and that Aurora was a genuine inhabitant of their world, and telling her that the demon isn’t true form of the original Diablos. Mordred elaborated that they were the organism that became the basis for Diablos and theorized that Diablos called the original in from the First Realm.

The Academy Disappearances
TBA