Obsidian Sky (Riftborn Series) Paperback – February 24, 2026

Special Edition: black and white dragon-printed edges (design embedded in the bleed area). Design will appear on the main edges.Nominated for Goodreads Librarians’ Rising Readers Choice Award 2026A 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. What she doesn't expect is Aether—an ancient, forbidden force that 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 is 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.Because 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—a dark, sweeping romantasy with dragon riders, brutal academy trials, and a slow burn enemies-to-lovers romance that blazes hotter than dragonfire. Perfect for readers who crave angsty, high-stakes romantasy with powerful heroines, morally gray princes, and fated dragon bonds.The Riftborn Series, Book 1 Complete romance arc with a series-altering cliffhanger Dual POV Open door spice level Content warnings available at www.jillaster.comTropes: Enemies to lovers, Slow burn, Forbidden romance, Dragon rider academy, Mentor/trainee, Royal prince hero, Fated bond, Chosen one, Deadly trials, Touch her and die, Prophecy/destinyFor readers who devoured Fourth Wing, Powerless, Throne of Glass, —and need their next obsession. Read more