Elei's Chronicles (Books 1-3‪)‬

In a world composed of seven islands in the middle of the ocean, the all-women Gultur race rules. Parasites create new human races, decimate towns and cities, killing the repressed mortals.

Rex Rising (Book 1):
Elei, a young aircar driver, leads a peaceful life until a mysterious attack on his boss sends him fleeing with a bullet in his side. Pursued for a secret he does not possess and with the fleet at his heels, he has but one thought: to stay alive. His pursuers aren't inclined to sit down and talk, although that's not the end of Elei's troubles. The two powerful parasites inhabiting his body, at a balance until now, choose this moment to bring him down, leaving Elei with no choice but to trust in people he hardly knows.
It won't be long before he realizes he must find out this deadly secret – a secret that might change the fate of his world and everything he has ever known – or die trying.

Rex Cresting (Book 2):
Still recovering at a hospital on the north coast of Dakru, Elei is convinced that his part in bringing down the Gultur is over. Rex has infected the other race and their dictatorial system is starting to collapse. Not every Gultur, though, has been affected, and on top of that, inside Elei's body, Rex has matured and goes through another transformation. Elei isn't sure he can survive Rex's new strength — but that may prove the last of his worries as the Gultur descend on him again.

Rex Equilibrium (Book 3):
With the help of his friends, Elei has managed to disorganize the regime run by the all-women race of the Gultur, and he's on a mission to bring peace to the Seven Islands.
Old secrets come to the surface, friendships are forged and betrayals discovered, and a girl, Alendra, has managed to take hold of Elei's feelings.With a map that leads underground and the hope of toppling the Gultur regime, Elei and his companions seek a weapon to tip the balance of power.
But unrest within the resistance means that this time they are on their own and, as if crossing a world torn by war while keeping Rex under control wasn't enough, Elei fears that before the end Alendra might break his heart.