Onyx Storm cover

Romantasy

Onyx Storm

Rebecca Yarros · The Empyrean #3 · 2025

To save him and the wards failing across the Continent, she has to seek allies in lands no rider has returned from.

Score
78.3
Spice
🌶️🌶️🌶️🌶️🌶️Steamy
POV
first
Ending
HEA / HFN
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Tropes

Content warnings

Graphic violenceDeathViolenceGoreBloodWarMajor character deathAnimal deathGrief & lossTorturePTSD

Curated signals, not an exhaustive guarantee.

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What readers think

Readers consistently praise the deepened dragon lore — especially Andarna's arc and the Irid mythology — Xaden's emotionally fraught venin storyline, Ridoc's scene-stealing humour, and a darker, grittier tone that shifts the series firmly from academy fantasy into epic war narrative. The opening and closing quarters are widely called the book's strongest sections. Common criticisms target a bloated, directionless middle, an overcrowded cast with too many similarly-named kingdoms and rulers, abrupt multi-POV chapters at the end that feel like whiplash, and a memory-wipe resolution that echoes Iron Flame's ending a beat too closely. Pacing frustrations are the dominant note in mixed reviews, with many readers feeling the expansion from trilogy to five-book series is visible in the page count. Overall consensus sits around 3.5–4 stars — fans of the world remain invested, but fewer readers call it better than Fourth Wing.

Read it if

  • · Fans of Fourth Wing and Iron Flame who are committed to the series and need to see Violet and Xaden's story through
  • · Readers who want dragon-centric fantasy that escalates from academy drama into genuine epic-war scope
  • · Anyone who loves established-couple angst where the stakes are life-or-death rather than romantic uncertainty

Skip it if

  • · You haven't read the first two books — Onyx Storm opens with no recap and is incomprehensible as a standalone
  • · You find slow, politically tangled middle sections and large ensemble casts frustrating rather than immersive
  • · You are sensitive to on-page violence, animal death, graphic injuries, or explicit sexual content

If you liked this

  • · For fans of A Court of Wings and Ruin — a third-book that trades intimate slow-burn for high-stakes alliance-building and world-ending revelations
  • · For fans of Throne of Glass (Empire of Storms) — a mid-series instalment that expands geography and cast significantly while setting up a larger endgame
  • · For fans of From Blood and Ash — morally conflicted hero, devastating secrets, and a heroine who must save both her love and her world simultaneously
  • · For fans of Shadow and Bone (Ruin and Rising) — a quest across a broadening world with a protagonist carrying a secret power that could change the war's outcome

In this series

Part of The Empyrean — read in order:

  1. 1Fourth Wing
  2. 2Iron Flame
  3. 3Onyx Stormyou’re here
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