2019’s Fireborne is the first book in Rosaria Munda’s Aurelian Cycle.
First Protector Atreus had a grand vision of what Callipolis could become under his guidance. The serfs would be freed, the masses would be educated, and people would be given positions according to merit, not accident of birth. For that to happen, however, the aristocratic dragonlords had to die, root and branch; mature dragons had to go as well. The dragons could be poisoned, but the massacring the aristocrats was left to mobs angry over famine and systemic abuse.
Repelled by the violence that he himself set in motion, Atreus spares the life of young Leo Stormscourge, sole survivor of his family. The boy is consigned to a state orphanage. Having matters of state to occupy him, Atreus forgets all about Leo.
Almost a decade passes.