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We Swore Upon a Dying Sun: A High Fantasy Novel

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The Gods just want to watch you suffer.

Heir to the throne, Blaen is destined to banish the Gloom and cure the Gloomrot. But crippled by the weight of expectation, he has spent his life avoiding the very duties that might save his kingdom. His twin sister, Rhiain, has spent hers shouldering them. Bound by love and sympathy for her brother—and a ceaseless devotion to their father—she effectively rules a dying realm for a doomed king.

When the kingdom’s enemies betray a fragile ceasefire and execute the king, Rhiain is shattered by grief, and her avoidant brother is forced to lead for the first time in his life. To secure the throne, the twins must complete a brutal pilgrimage to earn boons from the Gods. Without all six blessings, Blaen stands no chance of ascending the throne or driving back the Gloom. If they fail, the Gloom will consume the sun and twist their people into Gloomfiends. But their enemies are in pursuit, and the Gods care nothing for peace.

The Gods demand suffering, and the twins are about to pay the price.

515 pages, Kindle Edition

Published June 30, 2026

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Emery Arden

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Displaying 1 - 30 of 34 reviews
Profile Image for Emma.
169 reviews5 followers
Read
June 5, 2026
Thank you to the author for the arc. All opinions expressed in this honest review are my own.

A sad DNF at 19%. I will go back to this someday! The premise is very interesting, but I just couldn’t keep up with the execution. This read like a sequel with how we were dropped into a complex world and expected to know the characters and magic system and lore and worldbuilding. This book is probably better suited for a day when my ADHD brain isn’t so ADHD. I’m refraining from a star review for now and will edit this when I actually read the whole thing.
Profile Image for Magpie's Reading Corner.
37 reviews1 follower
Review of advance copy received from Author
June 8, 2026
***Thank you, Emery Arden, for the ARC copy! All opinions expressed in this review are my own.***

“Sometimes we must sacrifice a little bit of ourselves to protect something worth protecting.”

What lengths would you go to keep those you love safe? What would you be willing to sacrifice if it meant those closest to you could live?

These are the questions that you have to ask when reading ‘We Swore Upon A Dying Sun’. From the very beginning, you are pulled into the life of the Yusia-Teyrn, the royal bloodline of Yusia blessed by the nine gods of old. But blessings come with a cost, and sacrifices must be made to wield such incredible power.

We follow twins Blaen and Rhiain; Blaen, the reluctant heir to the throne and Rhiain, voice of the crown, keeper of her father, and a young woman who’s willing to sacrifice every part of herself if it means saving the ones she loves. My heart ached for Rhiain throughout the entire book: she faced impossible choices, was forced to keep secrets from a young age, and had an unwavering devotion to people who would use her to stand on to reach their own goals.

Blaen also tugged at the heartstrings: the reluctant heir with greatness thrust upon him from a young age, competing against a sister who is the clear favorite. The older brother who watched his sister cut away bits and pieces of herself for a father who would not give him the time of day. The young man who was forced into a destiny that he wanted no part of, dragged kicking and screaming into a fate that's kept secret by those closest to him.

The emotional depth that Arden creates within each storyline is compelling, thought-provoking, and intense. Rhiain’s storyline will leave you breathless from exploring the depths of her grief, whereas Blaen’s will leave you frustrated, exasperated, and eventually cheering him on to take his rightful place as heir to the Yusian throne.

Again and again, you ask yourself how far these characters will go to help their homeland survive the Gloom, help their people survive the takeover of the Zimrans, and help each other through near-impossible trials. From the brutality of the gods to the threat of the technologically advanced Zimrans to the ever-looming threat of the Gloom, you find yourself torn between which threat is the most pressing at any time. By the end, you will beg and plead for some sort of mercy for our main characters, but none will come; the gods await no man.

This book checks all the boxes: rich world-building and lore, intricate power dynamics, high-stakes political manipulation, emotional depth, and unforgettable characters. You won't go wrong picking ‘We Swore Upon a Dying Sun’ as your next dark fantasy. This is a must-read and a fantastic start to what I have no doubt will be an incredible series.

Read 'We Swore Upon A Dying Sun' if you like:

✨Dune Meets Fallen Gods Meets Priory of the Orange Tree

⚔️Dark Epic Fantasy

✨Reluctant Chosen One

⚔️Brother-Sister Team

✨Slow Burn Romance Side Plot

⚔️Gods With Teeth
This entire review has been hidden because of spoilers.
Profile Image for Robin.
106 reviews1 follower
Review of advance copy received from Author
June 28, 2026
3.5

Such an exciting, intriguing, and well thought out story. What a treat!

The world building in this book is no joke. In some ways, the complexity and epic nature of it reminded me of how The Hobbit and Lord of the Rings books were written. The intense world building may scare off some readers who do not like this style of writing. The book immediately plops you into the world without really explaining much explicitly, forcing you to either push through and figure things out through context or go to the glossary and piece things together. Given that I enjoy this about LOTR, I actually loved this quality of the book and would encourage anyone to give it a try and see if its for them (I think the story is worth it!).

The characters were also really well thought out and examined. Blaen's flaws are VERY obvious and frequently pointed out by his peers (mostly Gildas) and even himself. He grows throughout the book, but it is still evident he has more maturing to do as the series continues. Rhaian's flaws are also very focused on and pointed out frequently by Blaen. She definitely goes through significant character growth during the story and I thought her arc reached a pretty satisfying conclusion by the end of the story. The side characters also had pretty fleshed out personalities, especially Teilo.

I personally really enjoyed that the relationship focus of this story was the platonic sibling relationship between Rhaian and Blaen. I feel like the fantasy genre is pretty inundated with romance stories, so it was really refreshing to read something with a different priority. There are other platonic relationships focused on in this story as well. The complex family dynamics are done so well.

The reason for my lower rating is that even though the book had a lot of plotlines and characters, which could be pretty difficult to follow, especially because of complex nature of the world building. Because of this, by the end of the book, I wasn't enjoying myself as much as I was in the beginning because I was a bit stressed trying to make sure I was following everything. This is entirely a personal problem though.

I also thought that the death of a character was also a bit unnecessary to the plot. I didn't see how it furthered the plot or contributed majorly to any character development and it wasn't for some higher purpose. To me, it felt a bit like a shock value kill. However, I will say that the death of this character was treated incredibly seriously by the other characters and their respect for this character's life made the blow hurt less bad. I like that they were mentioned frequently after their death and grieved appropriately.

Overall, this book was an intriguing read. When it's at its best, which it is often, it's got some fascinating political conflicts, estranged family dynamics, and fantastic world building. I would happily recommend this for anyone who enjoys any of those themes and I'm sure the next book will deliver all of this and more!
43 reviews1 follower
July 13, 2026
4.5⭐️

This is a fantastic dark/epic fantasy - especially for a debut novel. The world building is unique and extensive and very well thought out. The main/major characters feel well fleshed out. The two main/POV characters in particular are excellent, but even the important non-POV characters feel like real people outside of their connection to the main characters/plot, for the most part.

I am a sucker for stories that focus on/heavily feature sibling relationships, and this book did not disappoint. The FMC and MMC are both very different people with different motivations and opinions about their circumstances, while still feeling like realistic siblings who care for one another. Getting to see the world through both of their POV’s definitely enhances the plot and my emotional attachment to both of them. There’s a lot of exploration specifically of the FMC’s relationship with their father and how the MMC feels about it as an onlooker that I found incredibly fascinating.

The world building is fantastic, if a tad daunting with how extensive it feels. There are a lot of titles/terms/etc. that are completely unique to the world/author, and it is sometimes difficult to keep track of what they all mean. There’s a glossary in the back of the book to help with that, though (I just didn’t realize until after I’d read it lol).

The plot itself is enjoyable (in a dark, depressing way, of course) and (mostly) easy to follow. There were a couple times that I felt like it was dragging a bit, and then others where it seemed like we’d breezed by an event that I thought was going to be way more important. It sometimes felt a little disappointing to skip over something I’d thought the book had been building up to, but I did ultimately enjoy that the plot ended up not following my exact expectations. And the ending was exactly the sort of thing I’d been both dreading and hoping for. It’s definitely got me hooked for book two!

TL;DR: An excellent fantasy to sink your teeth into if you enjoy heavy world building and dire stakes. The characters are great, especially the two leads, and the plot is both devastating and engaging. Some of the terminology is a little dense/hard to remember, and the pacing feels a bit off at times, but the execution of the ending more than makes up for it in my opinion.

Disclaimer: I received a free eARC of this book from the author. No review was required in order to receive the eARC, and all thoughts and opinions expressed above are my own.

Profile Image for Sonderous Reads.
118 reviews
Review of advance copy received from Author
June 19, 2026
Prince Blaen must earn six boons from bargaining Gods to stop the Gloom from eating the sun; Regent Rhiain already knows how his story ends and has attempted to shield her twin from his dark fate. Now, as a ten year war with Zimra comes to an end, the price of their peace is the loss of everything that makes the kingdom what it is. There was to be no Gods, no boon-marked magic, no pilgrimage that fulfills the covenant made 100 generations ago between man and god. Despite this price, Blaen and his sister along with his courtly circle, attempt to make one last pilgrimage and save their dying world.

Emery Arden’s “We Swore Upon a Dying Sun” is a genre-bending dystopian novel that explores power, rule, control, and magic versus science. Blaen bears the weight of a prophecy he never asked for and has fought his fate every step of the way. Rhiain has known the truth of his fate since the age of eight in a bargain made between herself and the god of Light; she allowed both her brother and her father to briefly escape their dooms by paying any price given by the greedy god. The story is rich in emotion and complexity that builds the world into this immersive read that keeps you turning the page (even when you don't have time to).

I love taking risks when I pick up and apply for ARCs; so, seeing Arden solar-punk dystopian stirred an interest that couldn't be quelled. And once I finally picked up the book, that interest became intrigue. The vastness of the world Arden built kept my nose in the appendix as often as I was immersing myself in the trials Blaen and Rhiain had to face. Moreover, the more I learned of their lives, both past and present, the more I felt for each of the twins. Those gods that promised them answers were the same that asked them to suffer, the very same that asked them to pay prices too steep for so little relief granted. For readers who enjoy the epic nature of series like “The Lord of the Rings” or “The Inheritance Cycle” with a darker edge, I highly recommend reading “We Swore upon a Dying Sun”. I, for one, cannot wait for the next part of this journey.
Profile Image for Cathryn Moore.
Author 1 book2 followers
Review of advance copy received from Author
June 25, 2026
Blaen is destined to save the world from the Gloom, an impenetrable fog that breads monsters and rot, but he’s spent his whole life avoiding any responsibility, instead letting his twin sister Rhiain shoulder the burdens. After their father, the king, is murdered at peace talks with an invading army, their mission becomes more important than ever, and they only have fifteen days to succeed.

I really enjoyed this. There are a lot of unfamiliar terms (which are all explained in the extensive glossary), but that doesn’t impact the enjoyment of the story. There are plenty of adventures and battles, and the ever-present Gloom provides a constant background tension. The characters are well written and the pacing is good, keeping the story moving along at a good speed. The timeline jumped from finishing one shrine to after completing the next one a couple of times, which made it slightly harder to keep track of where they were on the journey, plus it would have been interesting to see what Blaen’s trials were, but that was a minor irritation.

I found Blaen quite hard to like in various sections of the book. He is understandably upset about his lack of agency with his future, but he has stood by and watched Rhiain, his twin, take on so many burdens and give up her life for the throne he should be preparing for without even attempting to help. Even when he’s called out on his selfishness by Gildas, he feels bad for a few seconds and then starts making excuses instead. That’s not to say he doesn’t have redeeming features or isn’t likeable in other ways. He’s a conflicted character and that comes across very well.

Rhiain has had a terrible life and no one has tried to protect her from it, especially her father. They have a very close relationship but he allows her to give up her freedom and her happiness (she literally sacrifices her feelings and experiences of joy) to keep him functioning, which is the complete opposite of a parent’s duty. I’m really hoping things start looking up for her in the next book.
Overall, this is a great first book in the series and I’m looking forward to the next one.

Thank you to Emery Arden for the ARC.
Profile Image for Alex.
100 reviews7 followers
July 16, 2026
What first struck me about We Swore Upon A Dying Sun is how completely it trusts its readers. The first chapter drops you into the world completely, no one turns to the camera (so to speak) or has conversations where they explain things all the characters know. This can be intimidating, but trust me (and yourself!) it's amazing how quickly everything clicks into place, and the payoff is a fantasy world that actually feels fantastical (see also: RJ Barker).

Really though, for all I love being dropped into the middle of things as a reader and then having to figure it out on my own (see also: Yoon Ha Lee), what's more important is what Arden proceeds to do with the unique and well envisioned world they've created, and they succeed with flying colors on this front as well. The characters are wonderfully drawn, with both leads having strong, distinct voices. Conflict does not emerge out of stupidity, or the classic, exhausting "people not sharing information" go-to you see with lazier authors. The plot is fast moving and exciting, leading up to a conclusion that made me want the next book immediately (having to wait to find out what happens is the worst thing about We Swore).

I mentioned the fantastic characters in the above paragraph, and I'm returning to them before I wrap this up because they're what put this book in the five star realm for me. The relationship dynamics between the core family members are fascinating - there's a lot of focus on how familial bonds that are nominally built on all the things we generally consider healthy (love, support, trust) can warp and wound and grow unhealthily inward over time, which I don't think I've ever seen explored in a high fantasy novel before. This is handled gracefully and elegantly throughout, .

All of this is to say go get We Swore Upon A Dying Sun - it's wildly creative and emotionally intelligent and you'll want more when it's done.
Profile Image for InkedSirenXO.
319 reviews22 followers
Review of advance copy received from Author
June 6, 2026
Review of Advanced Copy received from Author

We Swore Upon a Dying Sun is the kind of fantasy that sinks its claws into you from the very first page and refuses to let go. Emery Arden has crafted a brutal, emotionally charged world where divine blessings come at a devastating cost, and every victory feels hard-earned.

The heart of this story lies in the relationship between Blaen and Rhiain. Their bond is beautifully complex, layered with love, resentment, loyalty, and impossible expectations. Rhiain was easily my favorite character. Her strength, grief, and unwavering devotion to both her family and kingdom made every chapter featuring her impossible to put down. Meanwhile, Blaen’s journey from reluctant heir to reluctant leader is messy, frustrating, and incredibly compelling.

The worldbuilding is rich and atmospheric. The looming threat of the Gloom, the terrifying consequences of failure, and the cruel indifference of the Gods create a constant sense of tension. Every step of the pilgrimage feels dangerous, and the stakes only grow higher with each blessing the twins seek.

What truly stood out was the emotional weight of the story. This isn’t a fantasy where heroes are rewarded simply for being noble. The Gods demand suffering, and this book delivers on that promise in the most heartbreaking and unforgettable ways.

If you love epic fantasy filled with political intrigue, sibling dynamics, divine trials, morally complex characters, and a world teetering on the edge of ruin, this is a must-read.

✨ Dark and immersive worldbuilding
⚔️ High-stakes quests and brutal trials
👑 Complex royal politics
💔 Emotional character journeys
🔥 Gods who are as terrifying as the monsters

This book is an unforgettable start to what promises to be an incredible series. I am already desperate for the next book.
Profile Image for The Reader of Books.
93 reviews5 followers
June 30, 2026
4 out of 5 stars!

Blaen is the Prince who doesn't want to be King. He is a Prince who is destined to save the world from the Gloom. Rhiain is the sister who supports her brother and adores her father. She is essentially the ruler from behind the scenes.

When their father is killed, Blaen is thrust into the role and destiny he didn't want and Rhiain is nearly consumed by her grief, which means Blaen has to finally accept his destiny and gain favor from the Gods to save his home.

High Fantasy indeed.

This book isn't for the faint of heart. It reminds me of Lord of the Rings with its lore and world building.

The world building is intense at times, I was thankful to have a glossary at the back of the book to help me get through it at times. Of course, I enjoy books with this kind of depth to it, but I will admit that I found it a bit of a struggle at times.

There were so many characters that we were introduced to, that so many of them seemed to fall into obscurity. However, I enjoyed meeting each and every one of them. Each and every one of them has their own motivations for what they do and they are so complex that I didn't mind the slower parts.

As I said earlier, this book can be a bit much for some readers, but once the story gets going, it gets so much better and interesting, again, at least for me.

The only reason it didn't get 5 stars was because of the pacing and the amount of effort it can take to really get into the story.

But like J.R.R Tolkien's works, it may take a little work, but in the end, I feel like its worth it and I'm excited to see what happens next!

Thank you Emry Arden for allowing me to join you on the journey that is book 1 of the Bloodbound series!
Profile Image for jam.
32 reviews
July 26, 2026
"Anything that asks you to bleed for it isn't a God; it's a sadist."

A solarpunk fantasy following a sibling duo that explores familial duties, religion, freedom and sacrifice? Sign me up.

As an older sister, this book hit me right in the feels. Blaen wormed his way into my heart from the very start and Rhiain was quick to follow (I really appreciate the dual POVs!). The book explores their relationship, the good and the bad, their strong bond but also all the places where it chafes. The family dynamic with their father was fascinating and I love that we got to see both the flashbacks to their childhood and its effects in the current timeline.

I also want to highlight that the book has a queer MMC and other queer characters! I love that the different identities and dynamics got unique names (I mean, how whimsical does "wind-blown" sound?) and I hope we'll see even more such characters in the sequel.

The worldbuilding is expansive and the author clearly put a lot of time and effort into it. Personally, I found myself a bit lost at times and, admittedly, would've preferred a bit of handholding just so I didn't have to consult the glossary so often.

I was surprised that we didn't get to see what exactly happened in the shrines during Blaen's pilgrimage, given how important it was to the story. I hope more will be revealed in the sequel, otherwise it would be a lot of hype with little payoff to the readers. In the same vein, certain scenes seemed to fly by in a flash, even though I think it would've been worthwhile to linger for a bit longer.

Despite the few weaker points, this is a fantastic debut and I cannot wait to see where Arden takes us next.


Note: I received an eARC and I am leaving a review voluntarily. All opinions are my own.
Profile Image for Soha Amer.
704 reviews9 followers
Review of advance copy received from Author
June 4, 2026
Epic world-building, divine trials, sibling bonds, and high-stakes fantasy. We Swore Upon a Dying Sun is a sweeping high fantasy filled with gods, grief, sacrifice, and the desperate fight to save a dying world.

At the heart of the story are twins Blaen and Rhiain. While Blaen has spent his life avoiding the responsibilities of his destiny, Rhiain has quietly carried the burden of leadership in his place. Their relationship adds a powerful emotional core to a story already packed with political turmoil, divine intervention, and looming catastrophe.

After the murder of their father shatters a fragile peace, the twins are forced onto a brutal pilgrimage to earn the blessings of uncaring gods. Every step of their journey feels dangerous, and every blessing comes with a cost.

The novel excels at creating a sense of dread and urgency. The Gloom is more than just a threat—it’s a creeping force that hangs over every decision, every sacrifice, and every hope for the future.

✨ What stood out:

* Epic high fantasy
* Twin protagonists
* Divine trials and blessings
* Complex sibling relationship
* Political intrigue
* Dark gods
* Quest-based adventure
* Kingdom on the brink of collapse
* Themes of grief, duty, and sacrifice
* Rich worldbuilding

A gripping fantasy that balances emotional character arcs with epic stakes and unforgettable mythology.


⚠️ Content Warnings

* Death of a parent
* Grief and mourning
* War and political conflict
* Violence and combat
* Execution
* Body horror elements
* Dark fantasy themes
* Religious manipulation
* Psychological distress
* Sacrifice and suffering
Profile Image for Chelsea Garrett.
35 reviews1 follower
Review of advance copy received from Author
June 8, 2026
3.5 rounded up
A very interesting world with a biomagical disease taking over. Highly recommend reading the glossary and keeping it handy, these characters are familiar with all the words so no extra explanations.
I wish there would have been more Blaen and Uther time to develop their relationship past what Rhiain thought and Blaen's words. Really Blaen's attitude was the biggest issue for me. Not that it didnt make sense for the story but we never really see a moment or moments of him developing the want to not save the world. Though I guess it could be attributed to Uther giving him too much freedom so he never fully had the sense of justice his sister has.
Rhiain gave up so much, just everything. She only had a few moments where it fully felt like she was on her own. She is truly an empathetic caring person to her own detriment. Im glad that Blaen pointed out her switch from doting on her father to doting on Idris, though I dont think it was verbalized to her.
Idris and Gildas were semi forgettable, helpful in fights and planning but it wasn't their story so they didn't feature much. Rem and Teilo were more evocative figures though Rem didnt get a chance to be something outside of the last scenes. His rational made sense but I wish he could have been more like Teilo in understanding that the gods/prophecy was real so fighting it wasnt great.
Auryn Lavanius and Trystan Vallant were kind of bland. They were good villains and twisted well but the main characters trauma was focused on more.
Overall I enjoyed it, the start was a little hard given the language learning but once that settled it got rolling. Im looking forward to more stories from Emily Arden
This entire review has been hidden because of spoilers.
Profile Image for Armando Ramirez.
281 reviews25 followers
Review of advance copy received from Author
June 9, 2026
We Swore Upon a Dying Sun by Emory Arden is an unforgettable, five-star read that completely immersed me from beginning to end. One thing I highly recommend right away: make use of the glossary as you read. It is essential for keeping up with the depth of the world and terminology, though I do wish e-readers made it easier to switch between the story and glossary without losing your place.
This is not a quick or casual read. There is a significant amount of detail and information to absorb, so taking your time is key to fully appreciating everything the author has built. And what a world it is, the level of detail in the world-building is absolutely incredible. I was genuinely surprised the book wasn’t twice as long given how rich and expansive everything feels.
Emotionally, this book is intense. It is steeped in pain and grief, almost as if the gods themselves take pleasure in the suffering of Blaen and Rhiain. The twins are forced to endure unimaginable hardship because they need the gods, and their struggle to survive while trying to save their kingdom is both gripping and heartbreaking.
What stood out most to me was the constant emotional pull. There is never a moment where you feel disconnected, you are always feeling something. A strong sense of despair runs throughout the story, with an ever-present tension that something terrible is about to happen. It keeps you on edge in the best way.
Overall, this is a beautifully written, emotionally charged story with stunning world-building. It is a demanding read, but absolutely worth the time and attention it requires.
Profile Image for Jini Sam.
128 reviews2 followers
June 23, 2026
Overall 4.75 stars.

Thank you to the author for providing me with an ARC in exchange for an honest review.

This first book in the series follows two royal siblings who go on a pilgrimage of sorts to help save their world from being overtaken by darkness (both literal and in the sense of evil/destruction). While one is receptive to this and takes on the burden that comes with being a leader, the other is reluctant and yet follows along as at the base of it he is the main person who is required to complete this pilgrimage. The story is set in a futuristic, steam punk-esque world.

This book is very well written for a debut! Kudos to the author!

The world created is expansive and creative however this can be daunting for readers as there are a lot terminology that are difficult to understand and the reader will have to repeatedly review the glossary to make sense at times. The villains and Gods are different to what I’ve read before.

The characters are not written perfectly; Blaen at times came across as spoilt however the more you read into his character you understand the reason his thoughts and actions are attuned the way they are. Likewise Rhian may seem too saintly however again her character develops a bit more towards the end when her feelings come into play. Overall the main two characters were developed beautifully however I hope to see more development of the side characters too in the following books!

I personally really enjoyed the father daughter relationship and I like how although very beautiful the relationship can turn parasitic when boundaries are not placed.

Although it took a little while for me to get into the book (about 20%) due to the terminology, I quickly devoured the book after and I have to say I’m very impressed and this is one of the best indie books I’ve read this year so far!
13 reviews7 followers
Review of advance copy received from Author
June 30, 2026
Thank you Emery Arden for providing a review copy of this book. What follows is my honest review and all thoughts and opinions are my own.

This was a wonderful read. I could feel the passion and time put into developing the world and the characters. This is absolutely a high fantasy story but the fantasy feels grittier and more loved as opposed to the world of fae and dragons most fantasies take place in.The family relationships at the center of this story really grounded it. In the hands of a less skilled writer the scope of the central conflict could have made it hard to emotionally connect with the story but Emery navigated this wonderfully. I also loved the trans representation and how that character's friends had his back at every opportunity. If you love stories with a strong ensemble cast of characters, high stakes with a ticking clock and stories that will make you cry more than once this is the book for you.

There were a few things that kept this being a perfect 5 for me. I found myself having trouble keeping up with some of the world specific terms and had to keep flipping back to the glossary to review definitions. The other being that while I don't usually have an issue with non linear story telling there were times that chapters hopping around time frames made me lose the thread of the plot but neither were intrusive enough to make me stop reading. I'm excited to read the next book in the series and find out the fallout of the events from this book
Profile Image for Ristretto.
210 reviews3 followers
June 30, 2026
We Swore Upon a Dying Sun is Emery Arden’s debut novel. It’s a dark fantasy with cruel gods, ancient technology, and magic. In the beginning I felt a bit overwhelmed by the world’s language and terminology, but once I found my footing I was completely invested. (Honestly, it was partly my own fault for not realizing there was a glossary.) The characters are the heart of the story and where it really shined, for me. Rhiain and Blane, our sibling protagonists, have a complex relationship that has been shaped by the events unfolding in their world, the burdens of their family, and secrets they carry. As we learn more about their histories and relationships, their strengths and their flaws, the story builds to these incredibly high stakes and powerfully emotional moments.

The world building is rich and well developed with many mysteries to explore, and yet the way the story unravels, doesn’t feel overwhelming. We alternate between the present and the past, allowing the reader to gain context and explore our characters and their motivations as well as the history and religions that shape this world. I found the Gloom and Gloomrot and how the antagonists used it in their technology to be deeply unsettling. This is a really ambitious debut novel, and I’m excited to see this writer grow in their craft and can’t wait for the next installment.

Thank you to Emery Arden for providing me with an advance review copy. This review was written voluntarily and all opinions are my own.
Profile Image for Federica Casotto.
7 reviews
June 30, 2026
Arc received from the author

I give this book a 4.75

I really loved the pace and the style, but the world building is very complex, and I feel you should read the prequel to fully understand it. The glossary is very useful but maybe a bit too broad, and the pronunciation are a challenge, I think I didn't get one right even with the pronunciation written in the glossary.

We follow the story of Rhiain and Blaen, twins, children of the king of Yusia. Rhiain is the voice of her father and loves him too much, sacrifices a lot for him. Blaen is the chosen one that doesn't want the burden. Their life revolves around Gods that wants their suffering and a profecy that had to fulfill to save the world. But throughout the story the discover not everything is that black and white.

Both main and secondary character are full of strengths and flaws, and they all grew in a very wonderful, yet very painful, way. I was so invested in their story, I felt every emotion and some of the plot twists really made me weep.

The story is presented with double POVs with time jumps, well contextualized and at the right time, great editing work.

The end was not what I was expecting, it gave some answers but left the opening to a great second book.

This is for you if you like fantasy with a touch of technology, siblings stories, inescapable fate.

It was a great journey, I will be waiting expectantly for book 2!
34 reviews1 follower
Review of advance copy received from Author
June 30, 2026
ARC Review

⭐️⭐️⭐️⭐️ | 4 Stars

We Swore Upon a Dying Sun by Emery Arden completely pulled me into its world from the very beginning.

This book has everything I love in fantasy: high stakes, emotional depth, fascinating characters, and a story that keeps unfolding in ways that make you want to keep turning the pages. The atmosphere was one of my favorite parts. There was this constant feeling of hope and heartbreak existing side by side, which made every victory feel meaningful and every loss hit a little harder.

The characters felt layered and believable. Their motivations, fears, and relationships added so much weight to the story, and I found myself genuinely invested in what would happen to them. The emotional moments landed especially well, and there were several scenes that stayed with me long after I finished reading.

The pacing wasn't perfect for me all the way through, which is why this ended up being a 4-star read instead of a 5-star one. There were a few sections that felt slower than I wanted, but the strong character work and compelling plot more than made up for it.

Overall, this was an immersive fantasy filled with emotion, tension, and memorable characters. If you enjoy character-driven fantasy with high stakes and a touch of heartbreak, this is definitely worth picking up.
Profile Image for The Bookmarked Fae.
62 reviews1 follower
Review of advance copy received from Author
June 29, 2026
⭐⭐⭐⭐✨

We Swore Upon a Dying Sun by Emery Arden is an incredibly promising start to the Bloodbound series. From the very first chapter, I was drawn into a richly imagined world filled with danger, ancient magic, and high stakes. The world-building is ambitious and immersive, with a fascinating magic system and lore that slowly unfolds in a way that kept me eager to learn more.

What truly stood out to me were the characters. Blaen is a compelling protagonist, carrying the weight of destiny while still feeling relatable and human. The relationships throughout the story, whether built on loyalty, friendship, or something deeper, add so much emotional depth and made me genuinely invested in everyone's journey.

The pacing does take a little time to settle in as the world and its complexities are established, but once the story gains momentum, it's hard to put down. The blend of political intrigue, action, and emotional moments creates a gripping read that left me desperate for more.

If you're a fan of epic fantasy with layered characters, intricate world building, and the promise of an unforgettable adventure, this is definitely one to add to your TBR. I can't wait to see where the Bloodbound series goes next!

Profile Image for Dominika  K..
112 reviews
Review of advance copy received from Author
June 19, 2026
3.75 ⭐ round up
I received an ARC of this book from the author, this is my honest review.
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I need to get this out of my chest first - Blaen deserved much better. My bram just couldn't catch a breath for one damn minute.

This book has such rich wordbuilding, it made me struggle a bit in the first half, but then so many things happened, I just couldn't put it down. Another thing I had to get used to and made me struggle, were the time jumps. I am not a big fan of one chapter being the present and next one is the past. I used the glossary way too many times for my liking, cause I was the living "Wait what? Wait who?" meme.

What I absolutely adore about this book is the fact the MMC and FMC are siblings! I got so annoyed with Rhiain and Uther's relationship though. I just couldn't stop thinking about it as if there was a hint of Electra complex, which wasn't my vibe honestly. I am so thankful for Idris, or else I would most likely not be a big fan of Rhiain in general, but her romance with Idris saved me.

My star of the show is definitely Blaen. And Teilo. But I'm not ready to talk about Teilo yet, I need more of their friendship like yesterday. Overall I would say that this book is a solid start of a new series that is much different that what's been putting out here lately. I am excited for the next book and I need my boy Blaen to be finally happy.
Profile Image for NS.
48 reviews3 followers
Review of advance copy
June 13, 2026
We Swore Upon a Dying Sun is an ambitious epic fantasy with a strong emotional core. What stood out most to me was the relationship work, especially everything surrounding Rhiain and her father. That thread gives the story real weight and keeps the political stakes personal. Blaen also brings a very different energy to the book, and his humor helps balance the heaviness of the world.

The worldbuilding is dense. There is a great deal to take in at the start, yet the book gradually reveals how its magic and political tensions fit together. Once the pilgrimage expands into the larger conflict, the story becomes much more compelling. The later sections deliver the strongest payoffs, and the epilogue lands especially well.

My main reservation is pacing. The book is long, terminology-heavy, and asks for patience early on. Some stretches are more emotionally effective than propulsive. Still, if you enjoy epic fantasy with strong character work and an ending that earns its sorrow, this is well worth reading.
Profile Image for Eloise Clayton.
168 reviews15 followers
Review of advance copy received from Author
June 18, 2026
A brutal, breathless, and deeply emotional dark fantasy!
From the very first page, this book grabs you by the throat and refuses to let go. The premise a dying kingdom, a creeping, monstrous "Gloom," and a pantheon of cruel Gods who literally thrive on human suffering sets a perfectly bleak and high stakes tone.
What really elevates this story, though, is the dynamic between the twins, Blaen and Rhiain. Their sibling bond is the absolute beating heart of the book. Rhiain’s fierce loyalty and heavy burden contrast beautifully with Blaen’s paralyzing anxiety and avoidant nature.
The world building is top tier (the concept of the Gloomrot and Gloomfiends is delightfully eerie), the pacing is relentless, and the stakes couldn't be higher. If you love dark fantasy with high stakes, complex familial relationships, and Gods who are anything but benevolent, you need to add this to your TBR immediately.
Prepare yourself for a lot of heartbreak and zero mercy.
Profile Image for Faye Zenon.
19 reviews1 follower
July 12, 2026
goodreads doesnt let me do half stars, but this is a 3.5, not a 3 star. beautifully written, just not for me.
this one left me with a lot of complicated feelings. a very interesting blend of fantasy with splashes of sci fi. very complicated family dynamics, but very believable if you come from a messy family lol.
there were a few points during this book that i felt like i wasn't smart enough to follow what was happening, but after reading the authors "about me" on their website, i realize they call this universe over complicated, which does help me contextualize that maybe i wasn't /supposed/ to understand everything happening.
if you are a highlighting, note taking, research loving kind of reader, this may be right up your alley!

thank you SO much to the author for providing me with an eARC for an honest review. all opinions are my own and posted voluntarily.
1 review
June 14, 2026
Review of ARC from the author.

Wow! I haven’t read a book with such interesting magic systems and world building in a long time. If anything, I would have spent an additional 100 pages learning more about the Gods and the magic unique to each God. This book is for you if you like complex worlds, complex characters, and especially if you relate to the challenges of aging parents and what that means for familial responsibility. Don’t make the mistake I did and not realize there is a glossary in the back—with expansive world building comes terms that may be difficult to intuit (and pronounce if you care about proper pronunciation while reading to yourself.)

I would read a whole prequel dedicated to the backstories of the more villainous characters.
Profile Image for J.C. Books.
110 reviews3 followers
July 1, 2026
I did receive an ARC copy of the book. My opinions and thoughts are my own.


This book is an expansive epic read about family, responsibility, grief and love. If you enjoy intense world building and complex situations, I think this is the book for you. More than once, I had to reread or go to the glossary in the beginning of the book. It starts immediately and can be difficult to follow at times, for me. The story is still interesting and heart wrenching. The characters are fleshed out with varying personalities and don’t feel like caricatures of their traits. I think this is a reflection of amazing talent and I would recommend this to lovers of long epics with fantastical worlds and difficult adventures.
20 reviews
Read
June 29, 2026
Tempo: slow burn.
There are three lines here, 2 of which are on behalf of the main characters and the last one bets on a secondary character. This book is suitable for those who enjoy reading about the gods and their role in this book. The first character, Blaine, lives a different life compared to Rhian. He has a certain role, which in one way or another is connected with sacrifice. In contrast to him, there is his sister Rian - here she sacrifices everything in one way or another. The role of the father is ambiguous. This story has its dark side, and the live-or-die concept is quite successful. A dangerous journey awaits you with its pitfalls.
This entire review has been hidden because of spoilers.
Profile Image for Alie Daniell-Rudd.
25 reviews1 follower
July 6, 2026
This is not what you think it is!
This book proves you cannot judge a book by its cover. It looks like a dystopian futuristic sci-fi, but oh no, high fantasy with Dragons and portals and an Heir to save the whole world.

There is a lot of weight on the FMC's shoulders, and she proves that in the first couple of chapters. She wants something different, but fate has a different idea. Emery, what have you done? This is a two-parter. I hope I get some answers.

I have no more words. Please go and read it yourself. If you like Forth Wing, ACOTAR, Eragon, or even LoTR, you will love this.

K thx bye.
Profile Image for Donna Heard.
187 reviews4 followers
July 1, 2026
On a secret mission they must do whatever it takes to ensure their people can survive. The twins set out with their trusted friends to get a special item and gain favor with the gods. This is a unique story with action adventures and some plot twist. The characters are likeable and will have you emotional.
Profile Image for Jennifer Michelle.
220 reviews9 followers
Review of advance copy received from Author
June 28, 2026
This book was full of world building, characters that you will like. This book was different due to how it was perceived. I do feel it was a bit more difficult to get sucked into immediately, however, once you hit that sweet spot, you will be fully immersed in it.
Profile Image for Lacey.
99 reviews4 followers
August 5, 2026
ARC Review -

The world building is amazing and I loved the characters. But I feel that it would have been better in first person and I sometimes got confused between the chapters that happened in the past and ones that were happening in the present.
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