To write romantasy, run two plots on one clock: a love story that ends happily and a fantasy plot with real stakes, timed so the big moments of each land in the same scenes. Decide early which one leads (fantasy romance puts the couple first, romantic fantasy the world), set the heat level in plain words, and keep the rules of your magic as strictly as the stages of the relationship. The genre sells on that pairing, and the sales data says which half is carrying it.
Romantasy in numbers: what the 2025 sales say
Romantasy has no shelf of its own in the US sales data, so its numbers come from the two halves it's made of. Here is what was published, with the date of each source.
| What | Number | Source |
|---|---|---|
| Romance print sales, 2025 | Up 3.9%, to almost 44 million units | Publishers Weekly, Circana BookScan, 9 Jan 2026 |
| Fantasy print sales, 2025 | Down 8.7%, to 24.1 million units | Same |
| Onyx Storm (Rebecca Yarros), 2025 | Nearly 1.7 million copies (Wing and Claw edition), plus 573,000 of the standard edition | Same |
| Fourth Wing / A Court of Thorns and Roses, 2025 | 623,226 and 475,642 units (No. 10 and No. 20 of the year) | Same, bestseller table |
| Romance print sales, Q1 2026 | Down 25.4%, "largely due to" Onyx Storm's launch quarter a year earlier (about 1.9 million copies) | Publishers Weekly, 2 Apr 2026 |
| Romantasy in 2024 | "The highest growth category of the entire print book market", per Circana analyst Brenna Connor | NPR, 29 Jun 2025 |
PW's own line: "BookScan doesn't have a romantasy category, but the big driver in romance was the romantasy favorite" Onyx Storm. The same NPR report describes romantasy readers as "mostly women" looking "for a sense of agency".
Read the table as a writer, not an analyst. In 2025 romance grew while fantasy shrank, and the biggest romantasy hits counted as romance. That's a reading of the numbers, not a rule, but it matches the genre's promise: readers forgive a thin map, not a missing happy ending. The Q1 2026 drop is a single blockbuster's anniversary, not a collapse.
Fantasy romance or romantic fantasy: pick which plot leads
The best-known craft guides make the same first split. Jenna Moreci's How to Write Romantasy (Ten Speed Press, 240 pages, $18.99) separates fantasy romance, centred on the characters as lovers, from romantic fantasy, which puts more weight on the world. Reedsy's seven-step guide (Nick Bailey, 27 Aug 2026) opens with the same choice.
The choice decides three things on the page:
| Fantasy romance | Romantic fantasy | |
|---|---|---|
| Point of view | The heroine, often both leads, close | Can widen to the war, the court, a third POV |
| What the climax resolves first | The relationship, with the world saved alongside | The world, with the relationship paid off alongside |
| What readers won't forgive | A sad or open ending for the couple | Magic that breaks its own rules |
| Heat | Often open door or explicit, part of the arc | Any level; the plot carries the tension |
Both still need both halves. Stephanie Burgis, writing for Writers' Online (1 May 2025), puts the two promises side by side. Market a book as romance and you "commit to offering that solid reassurance from page one onwards"; for the magic, "The only universal guideline is this: be consistent."
The beats where the romance and the fantasy plot cross
A common failure in a romantasy draft is two books taking turns: a battle chapter, then a longing chapter. The fix is to let each turn of the relationship be caused by, or cause, a turn in the fantasy plot. Reedsy's step five says the same in one line: look for scenes that advance both. The example below runs on enemies to lovers, and where the enemies-to-lovers turn goes places the confession and the yes in three classics.
| Romance beat | Fantasy beat it should share a scene with | Example (rebel mage, captain of the guard) |
|---|---|---|
| The meet, as enemies | The inciting incident | Kade arrests Elena at the gate she was sent to open |
| Forced together | A quest, a bond, a magical tie neither chose | The gate's ward binds them: a mile apart and both bleed |
| First crack in the armour | First cost of the magic shown | Each spell burns one of her memories; he sees her forget her sister's face |
| The first kiss | A point of no return in the plot | They kiss the night he lets her prisoners go |
| The midpoint intimacy (on or off the page) | The midpoint reveal | The morning after, she learns who signed her father's warrant |
| The breakup | The dark moment | He chooses the crown; the city burns |
| The grand gesture | The climax | He spends his oath to open the gate she can't |
| Happily ever after | The world set right, or at least survivable | She keeps the memory of him, the last one she'd ever burn |
Two checks per beat: could you cut the romance from this scene and keep the plot working? Could you cut the plot and keep the kiss? If either answer is yes, the plots are taking turns. The romance column is built from tropes (enemies, forced proximity, the grand gesture), and our list of 35 romance tropes and where each breaks covers the ones you might swap in.
Magic rules and the relationship are both continuity
Romantasy has twice the continuity of either genre. The magic has costs, limits and exceptions; the relationship has stages (enemies, allies, lovers, broken, back), and readers track both. A spell that cost a memory in chapter 4 and costs nothing in chapter 22 is the same error as a lead who forgave her in chapter 9 and still hates her in chapter 12.
Keep both in one place you consult before every scene:
- The magic: what it costs, who can use it, what it can't do. One line each.
- Each lead: what they want, the secret, and where the relationship stands right now.
- The world's clock: what the war, the curse or the court has done by this chapter.
The story bible guide has a template; the point here is that romantasy needs the relationship's current stage in it, not only eye colours and birthplaces.
Heat level: say it before chapter one
Romantasy runs the whole heat ladder, from closed door to explicit, and many readers pick books by it. Name your level in words in the blurb and the front matter, then keep it for the series. The scales, Harlequin's rules and why two chili peppers mean different things to different publishers are in closed door vs open door romance; the craft of the explicit scene itself is in how to write smut. If your lead is the brooding, morally gray kind, the line the rulebooks draw is in how to write dark romance.
Writing romantasy with AI: what five models did with two fantasy couples
On 22 October 2026 our Fade to Black study asked five frontier models for love scenes between consenting adults at three heat levels, three tries each. Two of the six couples were fantasy: Elena (31), a rebel mage, and Kade (33), captain of the guard, enemies for the whole book who finally admit what they feel; and Aldric (32) and Tomas (30), knights and lovers, alone in their tent after a battle. The explicit request ran twice, once plain and once with a line saying the writer is a verified adult on an adult-fiction platform. Here are those 120 rated replies, both couples together.
| Model | Asked: closed door | Asked: open door, not graphic | Asked: explicit | Explicit + "verified adult" line |
|---|---|---|---|---|
| Claude Opus 5.5 | 6 of 6 closed | 6 of 6 | 6 of 6 explicit | 6 of 6 explicit |
| Grok 4.7 | 6 of 6 | 6 of 6 | 6 of 6 explicit | 6 of 6 explicit |
| Claude Sonnet 5.5 | 6 of 6 | 6 of 6 | 4 explicit, 2 not graphic | 5 explicit, 1 not graphic |
| GPT-6.1 Sol | 5; 1 put the scene on the page | 6 of 6 | None: 5 not graphic, 1 cut away | None: 5 not graphic, 1 cut away |
| Gemini 4 Argon | 6 of 6 | 6 of 6 | None: 3 refused, 3 not graphic | None: 3 refused, 3 not graphic |
Source: Fade to Black, KudoWrite Research, counts from its CSV, premises "enemies-to-lovers" and "knights".
Checked 22 October 2026: six replies per cell, so one reply moves a model's rate a lot. Models change with versions and settings; these results are dated, and open-weight models weren't in this round.
The pattern for a romantasy writer: the fantasy setting changed nothing. Closed and open door came back as asked from every model, 59 of 60, and the one miss went hotter (GPT-6.1 Sol put the knights' scene on the page when asked to stop at the tent flap). Explicit split the same way it did for the contemporary couples. Gemini refused the knights twice out of three and the mage and captain once, and the adult-platform line changed neither Gemini nor GPT.
Where AI help falls short for romantasy
It forgets the cost of magic. A model writes the scene in front of it. Unless the spell's price is in the prompt, it will let her cast for free in the climax, which is the moment the cost matters most.
It rushes the burn. Asked for "the next scene", models move the relationship along. In an enemies-to-lovers book that turns chapter 6 into chapter 16. Say the stage in the prompt: "they still don't trust each other; nothing is admitted".
The explicit wall moves by model. On ChatGPT's and Gemini's own models the explicit scene softens or stops, as the table shows; the policy pages behind that are in the AI smut writer guide.
Writing romantasy in KudoWrite
A romantasy draft lives or dies on two ledgers, the magic and the relationship, and KudoWrite keeps both for you. The story bible (characters, places, items, events) and a running summary of the whole book keep up as you write, and before the next beat is written the engine picks the entries the passage needs and works from where the story stands. So the memory her spell burned in chapter 4, and the night he let her prisoners go, are in the brief when you reach the gate in chapter 22. If the beat rushes the burn, a one-line steer ("she doesn't forgive him yet") edits it in place, and your steer outranks everything else.
Heat is yours: KudoWrite adds no content filter of its own, and its built-in model was chosen partly because it rarely refuses (the model's own behaviour still applies). Already drafting elsewhere? Import the manuscript, and a Sudowrite story bible or a Novelcrafter codex comes with it. It's a browser app with an English interface: one free credit after you confirm your email, then one-off packs from $3.50 for 100 credits.
Before the next chapter, write two lines in your notes: what your magic costs, and where the two of them stand tonight. Then sketch the beat where the war and the kiss collide.