[The premise has changed. Feel free to save it if it's not your thing!]
All arts have declined, spiritual qi revival is underway, and the divine seats are vacant.
Demons and ghosts of every kind suddenly receive some news.
The Investiture of the Gods has descended.
After a day of office work, corporate drone Jiang Wei gets home and finds an ancient, yellowed scroll on her bedside table. She opens it, and the words "Investiture of the Gods" leap into view.
Jiang Wei: ...?
On the second day after the Investiture of the Gods appeared, Jiang Wei notices nonhumans showing up around her again and again.
She gets an unexpected promotion and raise, only to find her boss is a demon?
She encounters a ghost wall on the highway, and the Ghost King, dressed in a suit, introduces himself in three languages?
She meets an elegant, handsome man in ancient-style clothes on an outing, only to find he's a mountain god?
A beautiful fox spirit tells her, "The arts have been in decline for ages, but spiritual qi is quietly returning. The divine seats are vacant, and the order of things is yet to be decided."
"And you, Jiang Wei, have been chosen by the Investiture of the Gods. You can confer godhood!"
Jiang Wei: "Why? Just because my surname is Jiang?"
Fox spirit: "Make me a god first, and I'll tell you everything."
Jiang Wei: "...Heh. Get lost."
Jiang Wei's world is turned upside down. The head of the National Bureau of Special Administration personally comes to visit and says solemnly, "The divine seats are empty, order is in disarray, and demons and ghosts run rampant. The world may descend into chaos!"
So Jiang Wei, forced to accept the Investiture of the Gods, gets a government job.
Later, a figure becomes the subject of a popular legend: a mortal carrying the Investiture of the Gods.
"Wherever they go, the gods retreat. Nothing is forbidden."
Theme: Undecided