A dad bought a fantasy novel on Kindle for his teenage daughters. The cover looked great — dragons, magic, adventure. He sent it to their devices.
Then he started reading it himself.
“I bought it on Kindle because it looked like a fun read for my teenage daughters,” he wrote on Reddit. “Then while reading the book myself and encountering the spicy bits, I deleted it from their Kindles.”
The book was Fourth Wing — one of the bestselling fantasy novels of the decade. It’s shelved in “Fantasy,” not “Adult Romance.” Its author has publicly stated that people under 18 reading it makes her uncomfortable. But there was nothing on the cover, in the listing, or in the marketing to tell this father what was inside.
He’s not the only one. We analyzed 2,122 reader comments across 30 Reddit threads — fantasy, sci-fi, romance, parenting, librarian, and bookseller communities — and the same complaint came up in nearly every thread, often with hundreds of upvotes: I can’t tell what’s actually inside this book before I commit to it.
The Problem Nobody’s Solving
Here’s something strange: you can’t watch a movie without seeing its rating. You can’t buy a video game without knowing if it’s rated T or M. But you can walk into any bookstore in the world, pick up a novel, and have absolutely no idea what’s inside it until you’re already reading.
Books are the last major storytelling medium with no standardized content information system. Movies have had ratings since 1968. Video games since 1994. Television since 1997. In none of those cases did content information lead to the collapse of the medium — it led to readers, viewers, and players who could find what they wanted, and avoid what they didn’t, without anyone losing access.
Books deserve the same.
“There’s No IMDB Parents Guide for Books”
This exact phrase — or some version of it — appeared in thread after thread. Parents, librarians, teachers, and adult readers all asking the same question: where can I find out what’s actually inside a book before I commit to it?
The tools that exist all fall short, in different ways:
- Common Sense Media is the most-recommended resource, but it’s paywalled (only a handful of free lookups per week), not comprehensive, and sometimes inconsistent. As one parent put it: it can run “a little conservative” — rating books higher than needed, which erodes trust over time.
- StoryGraph has community-sourced content warnings, but they’re buried at the bottom of book pages, inconsistently applied, and dependent on enough users having read and tagged each book. Coverage drops off sharply for newer or less popular titles.
- BookLooks rates content but is affiliated with groups that advocate removing books from libraries — making it a tool for censorship, not informed choice. One reader pointed out it rates Loveless (a novel about an asexual character who doesn’t even like kissing) as equally objectionable as Lolita. The ratings reflect ideology, not content.
- Goodreads has the biggest database, but as one reader memorably described, “the UI and search features are ass.” Its recommendation engine has been known to suggest The Very Hungry Caterpillar as “readers also enjoyed” on a high fantasy novel. For months. Without irony.
None of these tools were designed to answer the fundamental question: what will I experience when I read this book?
The Fourth Wing Problem
The parent panic around Fourth Wing and A Court of Thorns and Roses isn’t just about explicit content. It reveals a structural failure in how books are categorized, marketed, and sold.
These books have fantasy covers. They’re shelved in “Fantasy.” They’re wildly popular on BookTok, where teenagers discover them alongside actual young adult novels. There is no signal — on the cover, in the metadata, in the bookstore placement — that distinguishes them from books appropriate for a thirteen-year-old.
Barnes & Noble employees described the problem from behind the counter:
“The biggest problem I see is customers shopping for kids — ‘they’re 12 and an excellent reader, would this YA book be a good option?’ I’m uncomfortable suggesting books like Throne of Glass or Shatter Me to parents for their tweens.”
One employee built a curated table of “safe for tweens” fantasy books at her store — not because it was her job, but because she was tired of having no good answer when parents asked for help.
This is happening in bookstores across the country: individual retail workers, librarians, and parents doing invisible, uncompensated content curation because no systematic solution exists.
And here’s the part that surprised us most: the parents in these conversations aren’t asking for books to be banned or removed. They’re not asking for censorship. They’re asking for information:
“I don’t mind explicit violence, one or two innuendoes and swearing,” wrote one parent in a library forum, “but I do not want to know every detail of what you were doing in the bedroom. This is why age ratings do not work — I need to know specifically what’s inside.”
Another parent wasn’t worried about sex scenes at all. What concerned him were the relational dynamics:
“I had a lot of trouble with the ‘violent and dangerous but attractive alpha male / weak beta male’ tropes in the book, which I find really toxic.”
These aren’t helicopter parents. They’re readers making thoughtful, dimension-by-dimension decisions about what’s right for their families. And they have no tools to help them do it.
The Fantasy Civil War That Isn’t
One of the most heated discussions in our research — a thread that generated nearly a thousand upvotes on its top comment — was titled “Anyone else sick of romance hijacking the fantasy genre?”
On the surface, it looks like a taste war: fantasy purists versus romantasy fans. But look closer and something interesting emerges. Both sides agree on the facts. Both agree publishers are flooding the market with romantasy because it sells. Both agree it’s become harder to find non-romantic fantasy. Both agree the covers, blurbs, and marketing have become unreliable.
The fight isn’t about whether romantasy should exist. It’s about whether the discovery infrastructure — the categories, the search tools, the metadata — distinguishes between what’s actually a very different reading experience.
A bookseller, in the most-upvoted comment in the entire thread, put it plainly:
“Blame the publishers and marketers. They completely caved, and from book cover to blurb to even the publisher’s notes, it’s become nigh impossible to tell unless you dig a little.”
Romantasy readers, meanwhile, push back against being framed as the problem — pointing out that the genre’s dismissal often carries gendered overtones, and that women-led fantasy isn’t somehow “less real” than its predecessors.
Both positions are valid. And both point to the same underlying failure: when you can’t tell what’s inside a book from the outside, everyone loses. The romance reader gets judged for their taste. The epic fantasy reader wastes time on books they won’t enjoy. The parent gets blindsided. The bookseller can’t help any of them.
Better information doesn’t take sides. It helps every reader find their right book.
Not Censorship. Information.
We need to address the elephant in the room.
In the current political climate, any conversation about “what’s in books” gets pulled into the orbit of book banning. Organizations like Moms for Liberty have weaponized content information as a tool for removing books from schools and libraries. This has created a chilling effect: publishers, platforms, and even librarians sometimes avoid providing content metadata for fear of being seen as pro-censorship.
But the readers we listened to have already rejected this false binary. From a librarian:
“Obviously we are opposed to censorship. But for goodness’ sake, give people the tools to choose what’s best for them personally.”
From an avid reader:
“I’m as anti-censorship as they come. But there are books with very graphic depictions of horrible things that you really have to be in a good headspace for, and knowing what you’re about to encounter isn’t censorship.”
Telling a reader what’s inside a book doesn’t ban the book. It doesn’t remove it from a shelf. It doesn’t judge anyone for reading it. It respects the reader enough to let them make their own choice.
What We’re Building
We started Grimoire Guide because we believe fantasy readers deserve better than guessing. Our approach is different from what exists:
We don’t rely on users to tag books. We use language models to read and analyze every book systematically — generating detailed metadata for content levels, themes, tropes, subgenre classifications, and age-appropriateness signals. Every book gets the same depth of analysis, whether it’s a bestseller or a hidden gem. That solves the “coverage drops off for less popular books” problem that has hobbled every community-sourced platform.
We don’t take sides. A five-spice romantasy isn’t “worse” than a clean cozy fantasy. An epic with a high body count isn’t “worse” than a quiet character study. They’re different experiences, and different readers want different things at different times.
We go deeper than genre. Genre tells you “fantasy.” We tell you whether it’s epic, urban, cozy, dark, romantic, or literary fantasy. Whether the magic system is hard or soft. Whether the violence is on-page or implied. Whether there’s a romance subplot and how prominent it is. Whether the ending is happy, bittersweet, or devastating.
We serve every reader. The parent vetting books for their teenager. The trauma survivor checking for triggers. The mood reader who wants cozy today and dark tomorrow. The trope-hunter looking for enemies-to-lovers with slow burn. The bookseller trying to help a customer. The librarian fielding questions they can’t answer.
The Right Book for the Right Reader
We believe every book deserves to be read by its right audience. Not its broadest audience. Not its most profitable audience. Its right audience — the readers who will love it for what it actually is.
Where the publishing industry has to optimize for sales and social platforms have to optimize for engagement, we get to optimize for something different: fit.
The best thing that can happen to a book isn’t going viral. It’s being found by someone who was looking for exactly that story — and knowing, before they open it, that it’s exactly what they wanted.
That’s what we’re building. And based on what we’ve heard from thousands of readers, it’s long overdue.