The next book of the series is available for preorder!
The Archon (Project Stellar Book #5):
https: //www.amazon.com/dp/B08YZ92RN5
"Embodied or bodiless, dead or alive, regardless of my current shape or guise, I hereby swear to always oppose evil and defy fear in protection of humankind..."
Once Grey's true identity becomes known, the giant shadow of his past spreads its wings behind his back, summoning the immortal troops onto the Esplanade in order to fulfil the ancient oath of the First Legion.
Still, no one likes sharing power. The City Archons are no exception. Grey and his followers are branded as rebels and traitors, triggering a fratricidal war in humanity's last refuge...