To Tame a Rogue — May Sage

Unbeknown to the men, dragons, shifters and elves of Midgard, the energy wall protecting them from the horrors beyond are but a temporary measure.
The gods are playing with fate, and if Shadow prevails, all on the continent are doomed.

To Claim a King

Accused of consorting with demons in her home town, Xandrie flees, only to find herself in a greater danger.
She's a mere human woman, thrust in a brutal tournament pitting vicious dragons females against each other.
Yet, she can't find it in herself to give up, as the winner will Claim the throne, and more importantly, the hand of the enticing Dragon King.

To Catch a Prince

A power has risen in the lands, a dark shadow no one seems to understand. As the newest Enchantress, Talia knows her duty lies in finding it.
But she's failed the bonds of blood once, looking away as her sister was continuously abused; she can't leave while she can be of use to her. Especially since she may never come back.

To Tame a Rogue

Mortals fear Absolians. Hate them. They're right to do so.
There is no place for weakness in the Kingdom of Fiery Shadows. Power is taken. Conquered. But the real challenge is keeping it.

When rumors reach him, suggesting that his elder sister may be alive, Ash, King of Absolia leaves for Farden in secret, only to find that his real enemies might be closer than he thought.

Age of Gold is a series of fantasy romance novels. The first volume may be read as a standalone.

Disclaimer
Unlike many fantasy books, Age of Gold is not a clean read. Expect swear words and adult situations. If you enjoy your books free of f-words, this series isn't for you.
Book three, To Tame a Rogue, features a polyamorous relationship. The other books in the series have monogamous main characters.