The Ensuing War — C.L. Pardington

The war between Atlantis and Oceania has raged for decades, but it wasn't always so... Lifelong friends and allies, Crehon Ariskan, Emperor of Atlantis, and Atargatis, future Mer King of Oceania, face a devastating threat from abroad. They agree to do whatever it takes to protect their worlds, but the toll of battle becomes higher than they ever imagined and in an instant friends turn to foes. Secrets, love, sex, betrayal, and tragedy await. The war is about to begin in this prelude to the Warriors of the Atlantean Empire Series. * Due to sexual content, this book is recommended for 18+