The Saga Of Seven Suns: Book 4: Scattered Suns

The destructive hydrogues continue their war against humans and the fiery entities, the faeros - a struggle that kills planets and extinguishes whole stars. Newly crowned Mage-Imperator Jora’h, the leader of the ancient and vast Ildiran Empire, struggles with new knowledge he has learned: an ancient bargain and long-standing treachery that may finally bring peace with the hydrogues, though it could mean the extermination of the human race.