One anonymous ChatGPT user generated the same Doki Doki Literature Club childbirth fanfiction scene thousands of times, and researchers noticed.
The study wasn’t actually about Doki Doki Literature Club. Researchers at the University of Washington and Colorado Boulder set out to map how people use ChatGPT for fiction, from original stories to fanfic and erotica, then combed through half a million public conversations for patterns in genre, repetition and obsession. Somewhere in that mountain of data, one thread stood out from everything else.
ChatGPT generated the same Doki Doki Literature Club pregnancy story thousands of times
In the stories, Schoolgirl Natsuki suddenly goes into labor in the literature clubroom; her friends panic, and ChatGPT fills in the rest each time with a slightly different ending. Every prompt cut off mid-scream, and AI finished the moment itself.
In one version, the paramedic delivers the line researchers quoted directly. “Congratulations, Natsuki. It’s a beautiful baby girl.” The same user ran this exact setup thousands of times over several months.
That obsession surfaced almost by accident, as the wider study mined WildChat, a public dataset of over 500,000 English-language ChatGPT conversations from 2023 and 2024, and found roughly a third of them involved fiction.
A tiny sliver of power users did almost all of it: the top two percent produced more than 80% of the fiction conversations logged. Researchers coined the term infinite story demanders for repeaters like this one, and Doki Doki Literature Club ended up topping the study’s entire list of most-mentioned franchises, ahead of League of Legends and Naruto.
About half of WildChat’s fiction prompts counted as fanfiction, and over a quarter were sexually explicit, though this particular thread stayed surprisingly wholesome. The researchers argue the pattern raises real questions about whether AI fiction could quietly replace human readers and writers altogether.
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It’s a fittingly odd footnote for a game that’s already had a strange 2026. Doki Doki Literature Club was pulled from Google Play earlier this year, while elsewhere, an AI novel that won a literature contest had its awards stripped entirely.
