A Myth of Ancient (The Secrets of Eterin #2) by TM Baylor:
 
Goddesses. A dead king. A long lost people. Old stories long thought to be myth that now walk free through Eterin.
 
After a devastating battle, Andyse is in shambles and the Davegu kingdom, Lupegi province, and the forgotten mountain city are not far behind. The once-strong foundations of the things that used to be believed are shaky and cracking more with every day.
 
With new, unsteady alliances and shifting motivations, no one knows who or what to trust. Long buried secrets have been revealed and the world itself is changing because of it.
 
Something dark is coming... After the gods of Lupegi learn the truth of the vicious battle and a new king in Davegu is crowned, a war is brewing. One with the power to change Eterin forever.
 
A Myth of Ancient is the second book in The Secrets of Eterin, an epic dark fantasy series that follows multiple POV characters from across the broken world of Eterin. It centers themes of power, the nature of resistance, erased histories, and the importance of knowledge to fight hatred. Features LGBTQIA+ and women characters. Intended for mature audiences, please check the content warnings.