In the world of Celestial Worthy of Twelve Heavens, the true antagonist is the Elderspawn— a vast, incomprehensible force trying to breach the world. However, because it is unable to directly enter, it sends its Heralds to prepare the way.
These Heralds are not chaotic, rampaging beasts, but rather organized forces, each working like human clans. There are seven such clans that serve the Elderspawn, each embodying different aspects of its corruption.
Depraved
Blighted
Desecrated
Enslaved
Shackled
Ruined
Damned
These clans function like human societies, each with their own Crests, ideals, and values. They are not just powerful but also highly intelligent, making them formidable foes.
If it weren't for the constant power struggles and infighting between them, humanity would have long since been annihilated.