Possessed By the Dragon Alien by Ella Blake

Madrian is one of the twelve ruthless members of the Axis elite. The little Terian female brought to work the lands surrounding his stronghold should be nothing. Invisible. A faceless worker who will never escape imprisonment.
But once he sees her, he knows in his dragon heart that she is his, and that will be his undoing.
Nena was abducted from her penal colony by raiders only to be dumped at…a different penal colony. But unlike conditions at Settlement 112-1, this one is lush and lavish and filled with the most deadly leaders of the Axis. One never wishes to be noticed by them, but Nena can’t escape the attention of one so beautiful, so forbidden, loving him could only end in a painful death.
But one does not ignore one of the twelve, and once Madrian has her in his sights, Nena’s fate is sealed. Or so she thinks…