
Prince of Sin
romantic fantasy
Series · romantic fantasy
The Divine Rivals series by Rebecca Ross has 2 known books (2 published) and is best read in publication order, starting with Divine Rivals (2023). The latest book with a fully recorded publication date is Ruthless Vows.
Start here: Divine Rivals (2023) — then read straight through in publication order.
The date order of published books and any announced future entries — the default way to read the series.
Divine Rivals, published in April 2023, opens Rebecca Ross's duology with rival newspaper columnists Iris Winnow and Roman Kitt caught between two warring gods, Enva and Dacre, dragging the mortal world into conflict; it runs 368 pages.
Alternative text for cover: Cover of Divine RivalsRuthless Vows arrived that December at a considerably longer 517 pages, picking up immediately where Divine Rivals' cliffhanger leaves off to complete the two-part story as one continuous narrative split across the pair of books.
Alternative text for cover: Cover of Ruthless VowsIris Winnow and Roman Kitt are rival columnists at a struggling newspaper in a city where two warring gods, Enva and Dacre, are dragging the mortal world into a devastating conflict. When Iris starts writing letters to her missing brother and slipping them beneath her wardrobe door, the letters vanish -- and answers begin arriving in a hand she doesn't recognize. She has no idea she's corresponding with Roman, the infuriating rival she can't stand at work, through a scrap of enchanted magic neither of them understands.
What follows is a slow-burn, epistolary enemies-to-lovers romance wrapped around a war between gods, as both journalists are eventually sent to the front lines to report on a conflict that starts consuming everything around them. Ross builds a wistful, painterly version of a WWI-era world -- typewriters and newsrooms sitting alongside gods who can bless or curse a battlefield -- and lets the central romance unfold almost entirely through longing letters before the leads ever admit the truth to each other's faces.
It's the book that helped kick off BookTok's romantasy wave: gorgeous, melancholy prose, a genuinely surprising identity reveal, low spice, and an ending that trades a tidy resolution for something more bittersweet. Readers who want fantasy romance without a body count of explicit scenes, who love letters-across-distance premises, or who miss the ache of early Cassandra Clare and Laini Taylor, tend to fall hard for this one.
Two. Divine Rivals (2023) and Ruthless Vows (2023) form a complete duology, officially titled Letters of Enchantment.
Publication order: Divine Rivals, then Ruthless Vows. Ruthless Vows continues directly from the first book's ending.
No. There's no announced third book continuing Iris and Roman's story. Wild Reverence (2025) is set in the same world of gods but follows different characters.
Yes, the duology is complete -- the story concludes in Ruthless Vows.
It shares the same universe of warring gods but has its own cast and timeline. It can be read independently and isn't required to enjoy the duology.
Reading order last verified .