**Nominated for the Goodreads Librarians' Rising Reader Choice Award 2026**

A deadly dragon rider academy. A forbidden power that could burn the realm to ash. And the one prince ordered to destroy her before she destroys everything he was trained to protect.

At the Asgar Training Academy, cadets manifest elemental magic—or die trying. Thaelyn Marren expects rejection. But when her magic awakens, it isn't air, water, fire, or earth. It's something older. Darker. A forbidden force no one has wielded in centuries. The moment it erupts from her hands, she becomes the most dangerous cadet in the academy—and the most hunted woman in the realm.

Prince Thorne Dareth is bonded to the King of Dragons, hardened by war, and haunted by a prophecy he refuses to believe. He's ordered to train her. Contain her. Break her, if necessary. But when a telepathic dragon bond ignites between their mounts—tethering his pulse to hers—distrust gives way to a slow, furious, impossible pull. The kind that rewrites loyalties, shatters oaths, and wakes things in the dark that should have stayed buried.

The Rift is opening. Creatures from the void are clawing through the cracks of reality. An ancient prophecy is surfacing, and it names them both. Before the war is over, one of them will sacrifice everything—and the cost will be written in blood, in fire, and in eyes that no longer remember what it means to be human.

And if they bond in soul and skin, the world may end—or else begin.

Obsidian Sky is an epic adult fantasy romance featuring dragon riders, brutal academy trials, and a slow-burn enemies-to-lovers romance that blazes hotter than dragonfire. Dual POV narration. Open-door spice level. Complete romance arc with a series-altering cliffhanger. Content warnings available at jillaster.com.

Book 1 of the Riftborn Series