THIS POST IS NOW CLOSED TO NEW PROMPTS.
New prompts can be posted to Post 3.
Fills may continue to be posted to this post at any time.
Post 1 also remains open for fills.
Note our 2026 Friending Meme is now up; feel free to post there if you're looking for new fandom friends!
This post will remain open for new prompts until we hit 4000 comments, at which point we'll open a new one to avoid captcha as long as possible. New fills and comments on fills are always welcome.

How-To's, Rules and Notes Behind the Cut
Prompts should be one prompt per comment, formatted in this way: fandom, character(s), prompt word/sentence
Prompts may also be open ended, unspecific, or anthropomorphic, such as:
or
Earth geography, sand, I don't like humans very much, either
Prompts for relationships are welcome; a / is used for romantic/sexual relationships and an & for platonic. A prompt that uses both means the relationship can be written as either romantic or platonic, such as:
Prompts may be repeated if they are unfilled; there is no obligation to read through every prompt to make sure yours isn't a repeat. This year's 3SF will stay open for new prompts through Sunday, February 15th.
Respond to your chosen prompt with a short fic of three sentences containing the fandom & characters requested!
Prompts can be filled more than once, as many times as someone has a new idea for them.
No, fills do not need to be exactly three sentences! It's more of a guideline. Please abuse grammar and punctuation as much as desired.
3SF is a Choose Not to Warn space. Spoiler and content warnings are not required, though writers are free to add them if they please. If you see something you don't like, just scroll until you do!
A Dreamwidth account is not needed to participate. Anonymous prompts/fills are welcome, or you can use Open ID. Using an account does make it easier to see people's responses to your fills though!
Cross-posting is encouraged; there is a 3SF Collection on AO3 if you'd like to post fills there as well.
Note that the comm is searchable if you're logged in! Tick the 'include comments' button when searching to easily find prompts for your chosen fandom/characters.
And most importantly, have fun! If you have questions, check the Sticky Info post and if they're not answered there, head to the Contact the Mods post.
Please remember to check through the rules and info and then go absolutely wild.
Any fandom that involves religious themes, any characters or pairings, And cast them from thee.
Date: 2026-01-20 02:28 am (UTC)Knives Out: Wake Up Dead Man, Jud Duplenticy
Date: 2026-01-21 04:22 am (UTC)For all it's symbolic of the Passion, though, Jud can't help but wonder if he should chuck the thing in the lake instead of hanging it where he could always take it down.
Eve's Apple is just a rock, though, and Jud knows full well that the hungry parts of himself he's had to excise aren't universal temptations, so it's nice to be a vessel safeguarding someone else's for once.
Re: Knives Out: Wake Up Dead Man, Jud Duplenticy
From: (Anonymous) - Date: 2026-01-21 05:58 pm (UTC) - ExpandRe: Knives Out: Wake Up Dead Man, Jud Duplenticy
From:Midnight Mass, Beverly Keane/Monsignor Pruitt
From:Re: Midnight Mass, Beverly Keane/Monsignor Pruitt
From: (Anonymous) - Date: 2026-01-22 12:49 am (UTC) - ExpandRe: Midnight Mass, Beverly Keane/Monsignor Pruitt
From:Re: Midnight Mass, Beverly Keane/Monsignor Pruitt
From:Re: Midnight Mass, Beverly Keane/Monsignor Pruitt
From:D.Gray-man, Lavi(/Allen)
From:Re: D.Gray-man, Lavi(/Allen)
From: (Anonymous) - Date: 2026-01-22 06:49 am (UTC) - ExpandRe: D.Gray-man, Lavi(/Allen)
From:The Legend of Zelda: Skyward Sword; Zelda
From:Re: The Legend of Zelda: Skyward Sword; Zelda
From: (Anonymous) - Date: 2026-01-25 03:57 am (UTC) - ExpandRe: The Legend of Zelda: Skyward Sword; Zelda
From:Nanquest, Father Francis Velaso & Nan
From:Re: Nanquest, Father Francis Velaso & Nan
From: (Anonymous) - Date: 2026-01-30 01:12 am (UTC) - ExpandRe: Fantasy High (Dimension 20), Kristen Applebees, And cast them from thee.
From:Re: Fantasy High (Dimension 20), Kristen Applebees, And cast them from thee.
From:Super Robot Monkey Team Hyperforce Go!, Mandarin
From:no subject
Date: 2026-01-20 02:33 am (UTC)Any Doctor, any companion
Date: 2026-01-20 10:50 am (UTC)"If you hated the bitter-char taste of burnt toast as much as I do," I shot back, "then you'd understand!"
Re: Any Doctor, any companion
From:no subject
Date: 2026-01-20 02:33 am (UTC)Doctor Who; any Doctor, any companion
Date: 2026-01-20 10:55 am (UTC)I did my best to turn and glare at him from my spot on the stake we were both lashed to. "Bully for you--but I'm human, so I'd appreciate it if you'd find a way to get us out of this mess, instead of pointing out every little technicality regarding culinary taboos!"
Re: Doctor Who; any Doctor, any companion
From:Re: Doctor Who; any Doctor, any companion
From:no subject
Date: 2026-01-20 02:34 am (UTC)Not our circus, maybe our monkeys? Wicked crossover
Date: 2026-02-04 05:55 am (UTC)“The Deer herds and woodland Animals of the Western Woods have been reporting an influx of Talking Animals arriving from seemingly nowhere at the Lamp Post,” Sallowpad said. “I flew over to see for myself and the new arrivals seem to consist of Animals of all types. The strange thing is, though they all seem to be fully grown, some speak in small bursts, or otherwise their speech is unintelligible, as if they are fledglings. Not all though – some are more eloquent, and from them, I learnt that they seem to have come from another land, called Oz, where Talking Animals are being prosecuted by a dangerous man who claims to be a Wizard.”
“A Wizard?” Peter asked, frowning deeply and trying not to notice Edmund clenching his fists on the armrests of his throne. “Of the same ilk as the White Witch?”
“I don’t have enough information to make that call, but I do advise being wary that they bring dangerous foreign forces upon their wings.”
“Oh, if the Animals are running away from oppression, we should think about helping them, don’t you think?” Lucy exclaimed. “They should be considered refugees!”
“I do not dispute your words, Queen Lucy, but even if these Animals are harmless — and even there, there is enough reason to question — we should also consider that they may also be the harbinger of others more malicious.”
“I think Sallowpad is right that we need to be cautious,” Willa chimed in. “Our Rats in Carlomen have also reported strange animals coming into Tashbaan from the desert but these act mute, even when our Narnian Talking Animals make contact. It seems they are all afraid speaking will get them killed.”
“That would be a correct assumption in Calormen,” Susan said with a dark, worried look in her eyes. “Which might suggest they are, as Lucy said, merely seeking safe refuge. But if they do not talk to us, then what we know about this Oz is also woefully limited and so should still be careful in our dealings with these newcomers.”
“Being careful and helping the refugees — if that is what they are — is not mutually exclusive,” Edmund said calmly before Lucy could protest. “We simply need more information.”
Peter nodded. “And I would like that information — pardon the expression — straight from the horse’s mouth. Sallowpad and Willa, see if you can entice a representative from those Animals who arrived in the Western Woods and those who arrived in Tashbaan to come here and speak with us, with the promise that if they only need a place to live in peace, Narnia will welcome them. But we cannot be careless and assume they are all harmless.”
Re: Not our circus, maybe our monkeys? Wicked crossover
From:Re: Not our circus, maybe our monkeys? Wicked crossover
From:no subject
Date: 2026-01-20 02:35 am (UTC)no subject
Date: 2026-01-20 02:35 am (UTC)Marbula One, Crazy Cat's Eyes
Date: 2026-01-20 02:54 am (UTC)"Have you heard the rumours?"
It's what Red Eye asked White Eye as soon as his coach pulled him into the meeting room, just to preempt what he was fairly sure the meeting would be about. White Eye's knowledge probably preceded his, but it never hurt to look like he was in the loop.
White Eye didn't dignify Red Eye with a reply. He was sat down abruptly in front of the projector and made to look at grainy construction site footage and tiny pictures so blown up from their original state you couldn't tell what they were.
Each one was tapped with the tip of a pointer, a pointless habit White Eye had never gotten over. "Galeem. Bright Hyu. Pawlaska." He sucked in air through his nose, feline ears twitching with interest atop his head. "You know what that means."
Of course he did. He'd said it himself- he'd heard the rumours. Five teams flunking out, five teams in. Three new tracks. Two rookies, leaving only the Purple Rockets to have never faced the gauntlet (which was what happened when you couldn't muster four points in four events).
"They're bringing the Wolfpack back," he said incredulously, because it really was a decision worth being incredulous about.
"The Swarm- and the Blackjacks- Stars, Flares, and yes, the Wolfpack," White Eye echoed in one blind lump, because there was no differentiation between the natural varieties of paddock fodder to White Eye. Winning was the Crazy Cat's Eyes' natural entitlement- everyone else was set decor. "I'll have briefings sent to you tomorrow."
"Heard, coach. We'll see how things go at Sakura Garden."
Re: Marbula One, Crazy Cat's Eyes
From:Pokemon FireRed/LeafGreen; Team Rocket grunts
From:Re: Pokemon FireRed/LeafGreen; Team Rocket grunts
From:Re: Pokemon FireRed/LeafGreen; Team Rocket grunts
From:Re: Pokemon FireRed/LeafGreen; Team Rocket grunts
From:Game of Thrones, jonsa, S8 AU
From:Re: Game of Thrones, jonsa, S8 AU
From:Re: Game of Thrones, jonsa, S8 AU
From:Re: Game of Thrones, jonsa, S8 AU
From:Steven Universe, Blue Dimond/Greg Universe, "Have you heard the rumors?"
From:Re: Steven Universe, Blue Dimond/Greg Universe, "Have you heard the rumors?"
From:The outsiders
From:Re: The outsiders
From:Any, Any, "Have you heard the rumors?" (Outsiders, Darrel Curtis, "Have you heard the rumors?")
From:Re: Any, Any, "Have you heard the rumors?" (Outsiders, Darrel Curtis, "Have you heard the rumors?")
From:MDZS/The Untamed, Nie Huaisang
From:Re: MDZS/The Untamed, Nie Huaisang
From:Re: MDZS/The Untamed, Nie Huaisang
From:Glee | Rachel & Quinn (background 18+Rachel/Will & Finn/Quinn)
From:Re: Glee | Rachel & Quinn (background 18+Rachel/Will & Finn/Quinn)
From:Re: Glee | Rachel & Quinn (background 18+Rachel/Will & Finn/Quinn)
From:The Serpent Gates, Csorwe&Talasseres Charossa
From:Kung Fu Panda, Po/Tigress
From:The Story of Minglan
From:no subject
Date: 2026-01-20 02:37 am (UTC)Original Fiction; original characters
Date: 2026-01-20 10:58 am (UTC)"Maybe, and maybe not," he answered, carrying it well away from the house. "But you'll be singing a different tune if this does explode, and we still have both our lives and a roof over our heads...of course, the nearest neighbors might end up hating our guts if it does, but that's beside the point."
Re: Original Fiction; original characters
From:Re: Original Fiction; original characters
From:no subject
Date: 2026-01-20 02:37 am (UTC)no subject
Date: 2026-01-20 02:38 am (UTC)no subject
Date: 2026-01-20 02:39 am (UTC)"Hope for the Fallen"
Date: 2026-01-21 12:45 am (UTC)Then Ralph saw her across the room, and their eyes met; he felt an almost electric shock of recognition, as if they'd known each other forever; she felt it too, he could sense it in her surprised smile.
Ralph had never believed in soulmates and he'd all but given up on earning God's forgiveness, but, as he made his way over to where Meggie Cleary was waiting, he felt something that had been missing from his life for a long time -- hope.
Re: "Hope for the Fallen"
From:Re: "Hope for the Fallen"
From:Re: "Hope for the Fallen"
From:Re: "Hope for the Fallen"
From:no subject
Date: 2026-01-20 02:40 am (UTC)no subject
Date: 2026-01-20 02:40 am (UTC)no subject
Date: 2026-01-20 02:40 am (UTC)Doctor Who; Eleventh Doctor, River Song
Date: 2026-01-20 11:06 am (UTC)River raised an eyebrow, smirking gently as she brushed dirt away from a small figurine. "Really, love," she murmured, "I would've thought you were past all of this, by now; you might have the time machine, but I have the education, the training, and the willingness to get my hands dirty."
Re: Doctor Who; Eleventh Doctor, River Song
From:no subject
Date: 2026-01-20 02:40 am (UTC)no subject
Date: 2026-01-21 06:58 pm (UTC)Maarva and Clem's life as scavengers, the prison on Narkina, everyone else's lives on Ferrix, the Ghorman rebellion, even Mon Mothma's career as a senator - he was there at the end of all of them. Maybe that's why, when they ask him to pick a personal codename, he goes with 'twilight.' The ending of the day, the dying of the sun.
Stardust, Galen calls Jyn. 'Starlight,' Cassian thinks, for her codename; to match her, to match his. The purest light against the deepest darkness; the beacon that always guides you home.
(no subject)
From:(no subject)
From:(no subject)
From:no subject
Date: 2026-01-20 02:41 am (UTC)i'm not a saint but i am blessed
Date: 2026-02-08 02:25 am (UTC)"No," she says, forcing the words through her throat, making them even and not hollow. "No, my brother's - he trusted me to keep it safe until he comes home."
Re: i'm not a saint but i am blessed
From:Re: i'm not a saint but i am blessed
From:no subject
Date: 2026-01-20 02:41 am (UTC)no subject
Date: 2026-01-20 02:41 am (UTC)Original Fiction; original characters
Date: 2026-01-20 11:12 am (UTC)"Well, I did initially think that it might have been a particularly well-executed suicide, but I didn't want to jump to any hasty conclusions."
"That's all very well for you, but I think it's time to find a new county coroner!"
Re: Original Fiction; original characters
From:Re: Original Fiction; original characters
From:Re: Original Fiction; original characters
From:Re: Original Fiction; original characters
From:Just Maybe (Teen Wolf; Stiles, Scott)
From:Re: Just Maybe (Teen Wolf; Stiles, Scott)
From:Re: Just Maybe (Teen Wolf; Stiles, Scott)
From:no subject
Date: 2026-01-20 02:41 am (UTC)Dragonriders of Pern via SouCon MUSH's Xanadu Weyr
Date: 2026-02-01 05:30 am (UTC)no subject
Date: 2026-01-20 02:41 am (UTC)no subject
Date: 2026-01-20 02:41 am (UTC)no subject
Date: 2026-01-20 02:41 am (UTC)OFic
Date: 2026-01-20 04:13 am (UTC)It wasn't bad- it still felt like the right form, he felt comfortable in his skin like this, alone, unmentioned, his own.
"Their name," he started- "No, my name is Jackson; I use... gender neutral pronouns," they bit their lip before locking eyes with their reflection.
"My name is Jackson. I use they/them. I am not a boy or girl." Something settled beneath their skin, and Jackson grinned.
The Monkees; Micky Dolenz, Davy Jones
From:Re: The Monkees; Micky Dolenz, Davy Jones
From:Reborn (K-Pop Demon Hunters; Rumi)
From:Re: Reborn (K-Pop Demon Hunters; Rumi)
From:Re: Reborn (K-Pop Demon Hunters; Rumi)
From:The Fantastic Journey – Jonathan Willaway, Varian - Concussed And Confused
From:Re: The Fantastic Journey – Jonathan Willaway, Varian - Concussed And Confused
From:Re: The Fantastic Journey – Jonathan Willaway, Varian - Concussed And Confused
From:Re: The Fantastic Journey – Jonathan Willaway, Varian - Concussed And Confused
From:Re: The Fantastic Journey – Jonathan Willaway, Varian - Concussed And Confused
From:The Summer Hikaru Died, "Hikaru", "Hikaru"/Yoshiki
From:Re: The Summer Hikaru Died, "Hikaru", "Hikaru"/Yoshiki
From:no subject
Date: 2026-01-20 02:42 am (UTC)Next Time We're Playing Snakes and Ladders
Date: 2026-02-07 07:23 am (UTC)Ami just sighed and picked up the dictionary, flipped to the relevant page, and handed the book over so that he could read the definition for himself.
Zoisite's frown deepened into a scowl as he was forced to acknowledge the proof that the word she had used was indeed a real word, but he still felt like it wasn't fair that she would use a word like that and he vented his frustration by throwing the dictionary across the room (where it bounced off the wall) and yelling, "How did you even learn a stupid word like axiom in the first place?"
(She would have told him that it's because she reads a lot, but that would be a fourth sentence, so it's down here and not technically an actual part of the fill.)
Re: Next Time We're Playing Snakes and Ladders
From:no subject
Date: 2026-01-20 02:42 am (UTC)It's killing me, but then again it's keeping me alive
Date: 2026-01-21 03:36 am (UTC)Yet every day in Night City is danger, and stress, and when she's sitting there, hands shaking from echoing adrenaline over a hot bowl of street food, there's something soothing about hearing commentary, and commiseration, and the straightforward admission that the world's bullshit from someone who saw it all happen and has probably gone through worse.
It's everything it felt like she lost forever when the tower job went wrong, and she's well aware that it's fucked up that the same thing that brings her back to herself and makes her feel ready to take on another day of life in Night City is the same thing that's put an inexorable clock on her continued existence, but hell, some drugs do the same thing, and they don't make conversation nearly as well.
Re: It's killing me, but then again it's keeping me alive
From:no subject
Date: 2026-01-20 02:42 am (UTC)no subject
Date: 2026-01-20 02:42 am (UTC)E33, Maelle/Verso
Date: 2026-01-20 04:59 pm (UTC)There's a sick feeling in Verso's stomach, an emotion far too complex to split into different parts (guilt and amusement and fear and lust and horror and hope and-). That probably means he should ignore it, continue paddling and idly flirting with both Sciel and Lune, but he's never been all that good at making sensible and appropriate decisions; he leaves the sea, making his own excuse to a narrow eyed Sciel, and follows after Maelle at a speed he knows is far too fast to be casual.
Re: E33, Maelle/Verso
From:Re: E33, Maelle/Verso
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From: