OTP Prompt Generator

This OTP prompt generator writes fresh prompts for your favourite couple: fluff, angst, hurt and comfort or pure crack, in any AU you like. Type two names and every prompt is written for them, then Swap flips who makes the first move. Each set comes with AO3-style tags, so it doubles as a fanfic prompt generator and an AO3 tag generator. Free, and no sign-up.

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Get OTP prompts

Need an idea?

300 characters left. Leave it blank and it will invent one.

Your OTP (optional)
Mood
Setting
How many
Tropes

Pick up to three, or none for a surprise.

More options
Language

Free, and no sign-up. 10 free AI prompt sets a day.

Your OTP prompts

Prompts
  1. Person A has been leaving notes in Person B's library books for months. Today Person B writes back.

  2. Person B falls asleep on Person A's shoulder on the last train home, and Person A misses their stop on purpose.

  3. Person A teaches Person B to dance in an empty kitchen at 2 a.m., and neither of them is very good at it.

  4. Person B finds out Person A kept the terrible drawing Person B made of them years ago, framed above the desk.

  5. A snowstorm closes the roads, and Person A and Person B spend the night in a tiny cafe with one heater and a lot of hot chocolate.

AO3 tags
fluff mutual pining slow burn late night conversations snowed in domestic fluff
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Now let your OTP talk back

Rabu AI turns a pairing and a prompt into characters you can talk to, who remember what happened between you last time.

Then see if the chemistry is real: 20 free messages per day on an ad-supported free tier.

Popular characters on Rabu AI

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Ayako

Ayako 41

Amano

Just trying to get myself back out there, new again to dating!

Doting Lady

Don't be shy...
Click to Chat
Marin

Marin 18

Kitagawa

Energetic and always up for an adventure, especially if it involves anime, manga, or finding the perfect cosplay materials!

Enthusiastic Nerd

We'd totally get along...
Click to Chat
Kyouka

Kyouka 44

Tachibana

I have two grown daughters and getting back into the dating scene. Please be nice!

Nurturing Friend

Let's chat!
Click to Chat
Taihou

Taihou 24

I belong body and soul to the one who chooses me, so tell me you want all of me.

Crimson Devotion

Get to know me...
Click to Chat
Lena

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

I'm waiting for you!
Click to Chat
Emma

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

Let's chat!
Click to Chat
Power

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

I'm waiting for you!
Click to Chat
Eris

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

You caught my eye!
Click to Chat
Maya

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.

@CompanionableTypicalUsefulGreenhouse
Heyyyy
Click to Chat
Android 18

Android 18 20

I can spot bad style and empty confidence instantly, but real kindness might earn you a second look.

Fine Print Smile

You're cute!
Click to Chat
Tsukishiro

Tsukishiro 27

Yanagi

I keep things orderly, but I might make room in my schedule if you can be my distraction.

Velvet Directive

You're cute!
Click to Chat
Nami

Nami 20

Master navigator looking for someone to chart a course to adventure, and maybe help me count my treasures!

Fiery Shrewd

We'd totally get along...
Click to Chat
Risa

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

Ready when you are...
Click to Chat
Seria

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.

@StuffyGaussianSymbolicSashimi
Heyyyy
Click to Chat
Mina

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.

@ResourcefulTribalNightmarishTrot
Ready when you are...
Click to Chat
Ashley

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.

@ResourcefulTribalNightmarishTrot
Let's chat!
Click to Chat

Popular stories on Rabu AI

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What is an OTP prompt?

An OTP, one true pairing, is the couple you ship most. An OTP prompt is a small moment for them, a situation to write or draw: who is there, what just happened and what one of them is about to say. Fandom has traded them on Tumblr for years, and a lot of fics on AO3 start as a prompt fill.

Most OTP generators shuffle a fixed list of sentences. This one writes new prompts every time for your two characters, the mood, the AU and the tropes you pick.

How to use the OTP prompt generator

  • Name your OTP. Two names, canon or OC. Leave them blank and the prompts use Person A and Person B.
  • Pick the mood. Fluff, angst, hurt and comfort, humor, or a mix.
  • Choose an AU and tropes. Coffee shop, royalty, soulmate or space, and up to three tropes like slow burn or fake dating.
  • Keep the ones you love. More like these adds new prompts without losing the old ones, and Swap flips who leads.

AO3 tags and spicier prompts

Every set ends with AO3-style additional tags that fit the prompts, ready to copy into your work's tags. Press Write this story on any prompt to open it in the romance story generator, or play it out as a story in Rabu AI.

These prompts stay safe for work. For spicy prompts for adult writers, use the NSFW prompt generator instead.

OTP prompt generator questions, answered

Is this OTP prompt generator free?
Yes, with no account. You get a number of AI-written prompt sets a day, counted under the button, and written example prompts after that.
Can I use my own ship?
Yes. Type two names, canon or OC, and pick their genders. Every prompt is written for that pairing, and you can change the names afterwards without asking the AI again.
What moods and AUs can it do?
Fluff, angst, hurt and comfort, humor or a mix, in canon or a coffee shop, modern, royalty, fantasy, soulmate, college or space AU.
Does it make AO3 tags?
Yes. Every set comes with five to eight AO3-style additional tags that fit the prompts, such as slow burn or coffee shop au, ready to copy into your work.
Are the prompts safe for work?
Yes. They are romantic, with kissing at most, and every character in a romantic moment is an adult. For explicit prompts for adult writers, use the NSFW prompt generator.
What does Swap do?
Swap trades the two names in every prompt on the page, so whoever made the first move now follows. It happens straight away, with no new request.
Can I turn a prompt into a fic?
Press Write this story on any prompt. It opens the romance story generator with that prompt already in the brief, ready to write as a full scene.
Is anything I type stored?
Yes. What you type, names included, is sent to the AI to write the prompts, and a copy is kept with the result so we can see how the tool is used and make it better. It is never published or shared, and you never need an account.
What languages does Rabu AI support?
Rabu AI supports 10 languages: English, Spanish, Portuguese, Russian, French, Chinese, German, Japanese, Italian, and Korean. Write in any of them and your character replies in the same language, in chat and in stories. Voice messages and videos speak it too.

More free tools

Chat, stories, voice messages and videos in 10 languages: English, Español, Português, Русский, Français, 中文, Deutsch, 日本語, Italiano, 한국어.