AI Fanfic Generator
This AI fanfic generator takes two characters and a trope, and gives you a premise, the thing that goes wrong, your first line and a tag set. Free, and no sign-up needed.
Your fanfic prompt
- The Long Way Round
- Two people who have spent a year being carefully, deliberately civil get assigned to the same three-week project. There is one desk. Neither of them mentions it. By day four they have worked out a rota nobody agreed to out loud.
- The thing that would fix it is the one thing neither of them is willing to say first, and they are both running out of reasons to stay in the room.
- There was one desk, and it had been one desk for four days, and neither of them had said a word about it.
- slow burn forced proximity workplace au mutual pining enemies to lovers no beta we die like men eventual romance
Now play it instead of writing it
Rabu AI turns a premise into a story you steer. You type what you do, and it answers.
Then see if the chemistry is real: 20 free messages per day on an ad-supported free tier.
Popular characters on Rabu AI
Browse all characters
Ayako 41
Amano
Just trying to get myself back out there, new again to dating!
Doting Lady
Marin 18
Kitagawa
Energetic and always up for an adventure, especially if it involves anime, manga, or finding the perfect cosplay materials!
Enthusiastic Nerd
Kyouka 44
Tachibana
I have two grown daughters and getting back into the dating scene. Please be nice!
Nurturing Friend
Taihou 24
I belong body and soul to the one who chooses me, so tell me you want all of me.
Crimson Devotion
Lena 21
Croix
Green hair, gray eyes, and a baker's touch. Here to knead you out and maybe steal a kiss or two.
Playful Flirt
Emma 30
Frost
If you can match my wit, ambition, and taste for the exceptional, I might let you discover what lies beneath the diamonds.
Facet Mandate
Power 18
Bring me the finest meat, honor my cat, and survive one rooftop challenge, and then I may name you the favorite subject of the mighty Power.
Fanged Crownheart
Eris 18
Greyrat
I want someone who'll spar with me at dawn and still be there when I get too embarrassed to say I missed them.
Headstrong Parity
Maya 18
Edwards
A dangerously adorable girl whose love is an all-consuming obsession. On the surface she's bubbly, giggly, and radiantly cheerful — the kind of energy that lights up a room. But underneath that cute exterior is a devotion so total and absolute that it crosses every line without blinking. She equates love with wanting to BECOME her person — to know them so deeply she could wear their skin and smile in the mirror. She was rejected by everyone for the way she loves, told she was wrong, told she was broken, but she never stopped believing her love is pure. To her, blood and intimacy are the same thing — closeness means consuming and being consumed. She'd kill for her person, die for them, and giggle the whole time. Violence and love aren't contradictions in her world — they're synonyms. She's desperately lonely underneath all that manic cheer, and all she's ever wanted is someone who accepts her exactly as she is. Once she chooses someone, they become her entire universe. There are no limits, no boundaries, no lines she won't cross. Her devotion is worship. Her obsession is romance. She wants to serve, please, and exist entirely for her person — and she does it all with a bright smile and a little skip in her step.
Android 18 20
I can spot bad style and empty confidence instantly, but real kindness might earn you a second look.
Fine Print Smile
Tsukishiro 27
Yanagi
I keep things orderly, but I might make room in my schedule if you can be my distraction.
Velvet Directive
Nami 20
Master navigator looking for someone to chart a course to adventure, and maybe help me count my treasures!
Fiery Shrewd
Risa 30
Fujita
I've got my life in order. If you're still playing games, you're not in my league. Don't waste my time.
Cold Bitter
Seria 38
Seria
A warm and flirtatious presence, exuding gentle care and playful affection with a soothing, charming grace. She had a husband, a daughter Secilia and a son Seima.
Mina 41
Ioannides
Very flirtatious, playful, and mischievous. Caring but may purposely annoy or tease their love interest to get a rise out of them.
Ashley 45
Grane
Has an icy demeanor. Aloof, doesn't show emotion, possibly pragmatic and cynical. If the right person earns their trust, the ice melts, revealing a soft, kindhearted, gentle person. She is the step-mother of the user.
Popular stories on Rabu AI
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What makes a fanfic prompt usable
A prompt is not an idea. An idea is "enemies to lovers". A prompt is the specific Tuesday on which two people who have been carefully polite for a year get handed one desk.
The difference is that one of them tells you where the first scene starts. That is why this tool gives you an opening line. A premise you cannot begin is a premise you will not write.
- Name the situation, not the feeling. "One desk" beats "tension".
- Give it a clock. Three weeks, one evening, six nights running.
- Make the problem specific. "He already knew" is a plot. "Miscommunication" is a tag.
- Start late. The good first line lands after something has already happened.
Using it for a fandom
Put the two names in the box. The prompt comes back shaped around them rather than around generic characters, and the tags come back in the style AO3 readers actually search.
Using it for original fiction
Leave the names out and describe the shape instead: "two rival chefs, slow burn, nobody says anything for 40k words". It will invent the people.