Timeline
Pre Era - chaos of enegry and beings that are older than time itself
Era 0
The start of everything, the god of time happens and creates time and order to existence, other elder gods join in, and slay the ones who do not join into 'the order'. The remains of these who do not become angels, the first immortal race, and became enslaved by the gods.
Era 1
The gods through trial and error begin messing with creating worlds and life. Much is trial and error, many things die. When Aether challenges the gods and Majora is created, a war happens. Aether frees the angels and creates Aetherus. Majora rips the elder time god into two, and destroys existence basically.
Era 2
The gods take things slowly, basically creating universes and such, honeycombing it all. Gods created in this time while not elder gods are almost as strong as them. They may move as they see fit between worlds and universes. The other immortal races are created at this time, but they are limited and given freedom, as not to repeat the history of Era 1.
Era 3
While started on accident, mortals are created once again, and more gods are created or appear, some created by the mortals themselves, and thus some gods study other gods and their interactions with mortals and such.
The Golden Era of Aetherus happens, where art and such flourishes.
Angel society forms into what it is mainly today for the most part.
Era 4 - Start
Man - made gods appear, and they also die 'quickly' as well.
The Fall of Aetherus
The mortals react towards the stars from their home planets now.
Beings known as Triads invade Aetherus, created by mortals to be gods, they seek the angel's power to become perfect. Both species are nearly wiped out due to this war. After which the survivors became ill with the illness known as Mind Rot, and attack another or others not infected. This leaves a scattered Population of roughly 250.
The Seraphim fall ill, man angels do too, culling must be done else the illness causes the angels to attack one another. No other Seraphs are born after this.
Taking many years angels come together and form Erbias, and create New Haven. They try to rebuild.
More and more reach to the void...but the void reaches back. Era 4 draws closer to an end.