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Escape reality when you fall into the pages of the Divine Rivals series in order, a duology about the magical love letters of two workplace rivals turned lovers during a time of a mythical war of the gods.

Also known as the “Letters of Enchantment” books by Rebecca Ross, these two books will enchant you from the book cover to all the pages in between in this social media favorite romantasy series. Explore the fantasy world and expert tips, including the age rating, for reading it below.

Divine Rivals by Rebecca Ross.

Divine Rivals Series in Order

Letters of Enchantment books in order: Divine rivals: one of two. Ruthless vows: two of two. Workplace Rivals, magical letters, war between two Gods.

The Divine Rivals series in order comprises two books, also known as the “Letters of Enchantment” series:

  1. Divine Rivals (April 4, 2023)
  2. Ruthless Vows (December 26, 2023)

Divine Rivals should be read first.

Divine Rivals is the first book in the series by Rebecca Ross, a #1 New York Times bestselling author of Young Adult fantasy books. It introduces the reader to young journalists Iris Winnow and Roman Kitt, two workplace rivals who become lovers after exchanging a series of magical letters as they cover a war between the gods, Dacre and Enva.

Ruthless Vows is the second part of the story of Iris and Roman, more deeply exploring the difficulties of war and the challenges it brings to their relationship.

The series is a TikTok favorite that was published by Wednesday Books, a YA fiction publisher that is an imprint of St. Martin’s Publishing Group, which is part of Macmillan Publishers.

Quick Takeaways & Reading Tips

Genre

The Divine Rivals books are a fantasy romance series (otherwise known as “romantasy”). Its main romance tropes are workplace rivals to lovers and forced proximity. The couple also come from different classes, and one is engaged to have an arranged marriage.

It’s a slow-burning romance series that hearkens to World War I, but with mythology and magical correspondence.


Age Rating

The publisher recommends the Divine Rivals series for Young Adults ages 13-18. I recommend it for ages 14 to 16 and older, based on war themes and some mild romance.

Trigger Warnings: war, death, grief, and addiction

Spice Levels:

The romance in this series burns slowly and is both limited and mild. The writing style of these scenes is more implicit and poetic than it is explicit. One example:

“She felt safe with him, skin to skin. She felt full and complete; she felt the wholeness in the dark, this weaving together of vows and body and choice.”

– Chapter 39 of Divine Rivals

Main Characters

  • Iris Winnow: A determined and passionate journalist who channels her familial grief and stress into her writing.
  • Roman Kitt: A talented fellow journalist who is reserved and mysterious and hails from an overbearing family.

Reading Tips

  • I most highly recommend the audio version, as the reading style enhances the fantasy elements of the narrative. I recommend the ebook version over the hardcover because the hardcover has a small font that can be hard to see for some readers.
  • The fantasy world-building is very basic and easy to understand, so don’t be afraid of it!
  • Divine Rivals ends with a major cliffhanger, so you should commit to reading the sequel, Ruthless Vows, as well. It reads more like two parts of one story than two books.
  • Be prepared for lots of plot twists throughout both novels — particularly at the end of both books. These twists ultimately make the series “worth it,” especially after more dense war themes pick up in Ruthless Vows.

Letters of Enchantment Series: Book Summaries and Reviews

Divine Rivals (Book 1 of 2)

#1 New York Times bestseller

My rating: ★★★★☆

Divine Rivals is a Young Adult fantasy romance story that shares the workplace rivals to lovers story of Oath Gazette journalists, Iris Winnow and Roman Kitt, who are competing to be promoted to columnist.

Iris comes from a lower-class family. Her beloved brother, Forest, is fighting in a war between two gods, Dacre and Enva, and her mother is battling alcohol addiction.

Roman comes from a wealthy family, and he is engaged to have an arranged marriage.

As they each cope with their personal problems, they correspond through magical typewriters and enchanted letters. Only Roman knows Iris is behind them. She believes him to be a mystery man named Carver.

When circumstances leave Iris corresponding on the front lines, Roman follows her there, and the plot thickens.

This novel raises the questions of whether Iris will find Forest and whether Iris and Roman will get together.

It’s a slow burn with mild spice that makes for a great “starter” fantasy book, as its fantasy elements aren’t difficult to understand. While it’s geared toward Young Adults, it reads well for adults too.

It’s a good choice for fans of the Fourth Wing series, historical fiction, mythology, writer protagonists, and magical realism.


Ruthless Vows (Book 2 of 2)

My rating: ★★★☆☆

Ruthless Vows picks up where the massive cliffhanger in Divine Rivals left off. So as not to spoil any plotlines for you, I’m going to be vague here: as the war rages on, the bonds of family and love are tested.

This book focuses more on facing the challenges of love during war and its themes more heavily on the brutal realities of war.

The war and the many plot twists it causes forever change this fantasy world and its characters.

This book is more dense than the first, but the shocking plot twists make it well worth it. While the gods, the war, and magic could have been better fleshed out, the limited fantasy world-building does make this series easy to read.

If you plan on reading the Letters of Enchantment series, you absolutely must read Ruthless Vows or you will be left knowing only half of the story of Iris and Roman. It’s more like a “Part Two” than a sequel.

Frequently Asked Questions

How many books are in the Divine Rivals series?

There are two books in the Divine Rivals series by Rebecca Ross: first, Divine Rivals, and second, Ruthless Vows.

Is Divine Rivals spicy?

No. While there is some spice (“open door romance”) in Divine Rivals, it is very minimal, mild, and implicit as opposed to explicit. It can be found in chapter 39.

Is there a second book to Divine Rivals?

Yes. The second book is Ruthless Vows. Divine Rivals by Rebecca Ross is part of the Letters of Enchantment series of two books.

Is Divine Rivals a stand-alone?

No. The sequel to Divine Rivals by Rebecca Ross is Ruthless Vows, which was published in December 2023.

Is Divine Rivals a trilogy or duology?

Divine Rivals by Rebecca Ross is a duology of two books, otherwise known as the Letters of Enchantment series. Book one is Divine Rivals and book two is Ruthless Vows.

Conclusion

Experience the magic of the Divine Rivals series in order: first, Divine Rivals and, second, Ruthless Vows.

You should read Divine Rivals first and, if you do so, you should absolutely read Ruthless Vows afterward, as it’s more like a “part two” to the story of Iris and Roman than it is a sequel.

It’s a beloved book series for both Young Adults and adults alike, and it’s great for fans of The Empyrean series by Rebecca Yarros and historical fiction series.

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