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Obsidian Sky - Jill Aster

Obsidian Sky

By: Jill Aster

Paperback | 23 February 2026

At a Glance

Paperback


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Special Edition: black and white dragon-printed edges (design embedded in the bleed area). Design will appear on the main page edges.

Nominated for the Goodreads Librarians' Rising Reader Choice Award 2026

A hidden bloodline. A waking prophecy. A love that could either save the realm or end it.

Obsidian Sky delivers an epic tale of elemental magic, ancient prophecies, dragon riders, and a love that burns brighter than destiny itself. â­â­â­â­â­Goodreads reviewer

Obsidian Sky is an electrifying fusion of elemental magic, dragon-rider destiny, and slow-burn romance, delivering a richly imagined fantasy world where one fierce girl's power-and one guarded prince's heart-might be the key to saving their realm or destroying it entirely. -NewIn Books

Thaelyn Marren enters the Asgar Training Academy wanting nothing more than to prove herself amongst the other cadets, where she must endure life-threatening trials in the hope of manifesting air, water, fire, or earth magic. Not to mention, a lucky few will pair with dragons who select their riders with ancient instinct, answering only to those whose souls burn bright enough to match their own.

When Thaelyn's power stirs in ways no instructor can explain, she draws the attention of the crown, particularly Prince Thorne Dareth, a renowned warrior and a dragon rider. Hardened by discipline and haunted by a kingdom he was born to serve, Thorne sees Thaelyn as a danger to the realm and yet is charged with her training. And amidst clashing personalities, an undeniable pull forms between them, potent enough to awaken dark forces that once tore the world apart.

Now rift-born creatures thought to exist only in nightmares are slipping through the cracks of their reality. And as they push the realm toward open war, Thaelyn may be the only one able to stop what's coming. That is, only if Thorne can choose between loyalty to his crown or the girl whose power could either save their world or bring it to ruin.

Enemies to lovers

Dragon-rider fantasy and lore

Slow-burn forbidden romance

High-stakes political intrigue

Destiny/ Prophecy fate

Elemental magic system

Immersive fantasy world

POV: 3rd limited, closed with dual per scene or chapter

Recommended for fans of Fourth Wing, Throne of Glass, Game of Thrones, and House of the Dragon

Industry Reviews

Obsidian Sky is an electrifying fusion of elemental magic, dragon-rider destiny, and slow-burn romance, delivering a richly imagined fantasy world where one fierce girl's power-and one guarded prince's heart-might be the key to saving their realm or destroying it entirely. -NewIn Books

Obsidian Sky wrecked me in the best way. From the moment Thaelyn stepped into the Training Academy, I was hooked. The world is vivid and dangerous, filled with elemental magic, dragons, and secrets that unfold with perfect tension. 

Jill Aster's writing is lush and lyrical, the kind that stops you mid-page. Thaelyn and Thorne's slow burn is explosive, their banter sharp, their chemistry impossible to look away from. The dragons are unforgettable, ancient and powerful, with personalities that leap off the page. If you loved Fourth Wing or Throne of Glass, this will be your next obsession. The ending left me breathless. â­â­â­â­â­Goodreads reviewer

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