Rebecca Yarros's *Empyrean* series continues its phenomenal success, with the recent release of *Onyx Storm* propelling all three books to the top of Amazon's 2025 Kindle bestsellers list. The series' popularity skyrocketed following the 2023 publication of *Fourth Wing*, largely due to the enthusiastic support of BookTok. This romantasy series has since dominated bestseller charts across various platforms.
The influx of new readers following *Onyx Storm*'s release is a testament to Yarros's captivating writing style, seamlessly blending fantasy and romance to appeal to a wide readership. With an Amazon-produced *Fourth Wing* TV series now in development, the *Empyrean* series has the potential to surpass even the *Harry Potter* franchise in popularity.
The Physical Editions Are Also Popular
Onyx Storm (Deluxe Limited Edition)
While dominating Kindle charts, the *Empyrean* series also enjoys significant success in physical book sales. Both the deluxe and standard editions of *Onyx Storm* rank within Amazon's top 10 bestselling physical books of 2025, with *Fourth Wing* holding a spot in the top 25. Only the recent release of Suzanne Collins' new *Hunger Games* novel has displaced *Onyx Storm* from the number one fiction spot—a position it may well reclaim given the continued influx of new readers discovering the series through *Fourth Wing*.
Fourth Wing and Iron Flame are Part of Kindle Unlimited
Kindle Unlimited
Readers with a Kindle Unlimited subscription can currently access *Fourth Wing* and *Iron Flame* for free on the Kindle app. Don't miss out on this opportunity to dive into the *Empyrean* series before this offer expires.
