Their Will Undone by Valldeperas, R. J.

Their Will Undone

A debut YA fantasy must-read for fans of The Winner's Curse, What the River Knows, and This...
$23.98 USD
$23.98 USD
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Author: R. J. Valldeperas
Format: Hardcover
Language: English
Subtotal: $23.98
Their Will Undone by Valldeperas, R. J.

Their Will Undone

$23.98

Their Will Undone

$23.98
Author: R. J. Valldeperas
Format: Hardcover
Language: English

A debut YA fantasy must-read for fans of The Winner's Curse, What the River Knows, and This Woven Kingdom.

When a maiden is selected to marry the emperor, her journey to the palace will see her fighting both a spark of magical power and her growing feelings for her broody escort in this romantic fantasy duology opener, inspired by a true story from the Inca empire.

In Amaru, it is an honor to be chosen in the annual harvest and serve the gods'-favored emperor. Nina's brother has already been chosen, but when the emperor's men come a second time for her sister, Nina volunteers instead. She is taken to the acllahuasi, a gilded cage where women train to become servants or wives for the ruling class. It is there that a soldier comes to collect her, and Nina learns of her fate--to become a wife...to the emperor.

As the emperor's trusted friend and soldier, Kasik is ordered to retrieve Nina and deliver her untouched. But the emperor's betrothed is not as he expected. The distrust between Nina and Kasik is thicker than the trees surrounding them, and Kasik's honor is put to the test when their path back to the capitol leads them into dangerous territory. Their lives and hearts are in peril as forbidden desires are unearthed, along with a stirring of dark magic in Nina that inexplicably ties her to the gods.

What begins as a simple task becomes a tense journey that forces Nina and Kasik to confront where their true loyalties lie--with the emperor and the fate of their people, or with the desires of their own hearts.


  • Historical Inspiration: This story was inspired by the Inca Maiden of Llullaillaco.
  • Betrothed's Best Friend: When Nina arrives to the capital city, she'll be married to the emperor of Amaru--who happens to be Kasik's best friend.
  • Forbidden Romance: Nina is engaged to the emperor. Kasik is a soldier in his army. Even so, they can't deny the sparks that erupt between them.
  • Forced Proximity: Nina and Kasik must work closely together to travel across the dangerous terrain leading to the capital.


Author: R. J. Valldeperas
Publisher: HarperCollins
Published: 06/02/2026
Pages: 368
Binding Type: Hardcover
Weight: 0.88lbs
Size: 8.36h x 5.52w x 1.27d
ISBN: 9780063388741
Audience: Young Adult


Review Citation(s):
School Library Journal 04/17/2026 pg. 1
Bulletin of Ctr for Child Bks 05/01/2026
Kirkus Reviews 05/15/2026
Booklist 06/01/2026

About the Author
Valldeperas, R. J.: -

R.J. Valldeperas is a Peruvian Venezuelan writer living in South Florida with her husband and five children. She has experience in academics as a teacher and tutor and also in the creatives sphere as a photographer, content creator, and small shop owner selling custom-designed bookmarks. She enjoys writing fantasy and contemporary novels with characters that look like her and live in worlds steeped with culture. Visit her online at rjvalldeperas.com.

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