#daddecember2025

[jumbledletters]

Dad!Simon Riley bursting into his kid’s dance recital last minute, in a disheveled suit he changed into in the car while racing from the tarmac straight to the school.

All worth it, when he sees his kiddo’s face light up and his spouse give him an exasperated but loving look, while directing him to sit on the saved seat.

“Always cutting it close, aren’t you?”

“Made it, didn’t I?”

[daddecember]

Welcome to Dad December 2025!

So, with no further ado, everyone who participated last year, welcome back! To everyone joining this year, welcome in! We cannot wait to see what you create.

Please make sure to read this post carefully, as many questions have been answered here already. If you don’t find what you are looking for here, you are welcome to come to our ask box or ask questions in our Discord server here. The mod team will get back to you as soon as possible.

This year’s AO3 Collection → https://archiveofourown.org/collections/DadDecember2025

Event Info & Rules

DadDecember is an annual prompt month featuring platonic father and child relationships. We have a collection of prompts for each day meant to inspire works to be created.

*Due to the nature of this event being, do not submit father/child incestual content. That is not the point of this event. This event is strictly platonic. Thank you for understanding.

There are 62 prompts this year with 10 alternative prompts. Each day has two prompts, one situational/trope prompt and one dialogue prompt. You do not need to use both. While we do encourage you to mix and match prompts with different days to fit your specific WIP, we do ask that you tag the prompt you used, not just the day.

This is a prompt month meant to inspire works, so please don’t take any of the prompts too seriously! If you want to get silly with it or really angsty, that’s up to you! How much of the prompt you use and how you use it is all up to you! If you think it fits the prompt, then it does. There is no gatekeeping in DadDecember.

It’s up to the creator how much they want to produce or what media form they want to create in! Anything and everything counts (and if you’re really unsure, you can always ask!). The idea of the event is to create, no matter in the manner you do so. 

As far as “how much do I need to do in order for it to count?” – Well, that’s up to you! All participants, regardless of how many works they put out, will be recognized for their efforts! A google form will be sent out after December ends in which you will be able to say how many works you completed. Works do not need to be published in any way shape or form to count. Participants will be ranked by completion in a tumblr post after the form closes and a custom role will be available for completionists in our discord server.

AO3 TAGGING

Required Tags:

#daddecember2025

#Discord: DadDecember

TUMBLR TAGGING

Required tags:

#daddecember 

#daddecember2025

#sfw or #nsfw

Optional Tags (but appreciated if used)

#DadDec No.1, #DadDec No.2, #DadDec No.3, ect.

#fandom or #OC, … (ironman, originalcontent, oc …)

#teeth, #gore tw, #etc …..(trigger warnings and content warnings. Add “tw” or “cw” AFTER the trigger/content warning )

For the sfw/nsfw tag, please use your best judgment. A Mature or Explicit rating (for anything except gore) should be marked as nsfw.

Reblogging Policies:

NSFW works must have all explicit content under a “read more” in order to be reblogged.

You MUST tag @daddecember if you wish for your work to be reblogged

If you notice your work has not been reblogged (+ you tagged us) and it has been 2+ days, please send us an ask! It is likely that tumblr ate the notification.

Frequently Asked Questions

Q. Do I have to do all 31 days?

Participate as much as you would like! Whether you can get out one piece between now and the end of December or 45, we are here to encourage you all along the way!

Q. Can I post early/late?

Yes, you can post whenever you want. Due to time constraints, we may not reblog posts outside of December (pinging @Mod Addri via discord will always get you reblogged, though, so you can always try that ;) ).

Q. Can I combine DadDecember with other creation challenges?

Yes, as long as the other challenges allow it as well. Please reference their rules.

Q. Can I use prompts to write a new chapter for an existing fic?

Yes.

Q. Can I use a prompt multiple times?

Yes, but it only will count once for your total completion number (unless combined with a different unused prompt).

Q. Do I have to finish a fic I started/can I post WIP’s?

Yes, you can post WIPs. Snippets or other forms of WIPs are completely fine and will still count for completion! As long as you started it, feel free to count it!

Q. Is collaborating allowed?

Absolutely, we even encourage it! Collaborations can be an amazing way to get full completion status (especially if you’re competitive) without as much work! It would count towards being a completionist for both/all of you.

Q. Can I combine prompts? Is there a limit on how many?

No limit and combine as many as you’d like.

Q. Can I start working on the prompts before December?

Absolutely! That’s why we post the prompts a little over a month in advance. We recognise how difficult it can be creating for 31 days in “real time” so feel free to start creating early!

Q. Do I have to use your required tags?

If you want your work reblogged, yes.

Q. Does combining prompts count towards completion?

Yes.

Note: This is a creation challenge, please don’t repost your old work under our tags (unless it’s been changed or edited for the event).

Best of luck,

Mod Addri

Prompts list typed out is under the cut.

2025 Prompts List:

1: Kintsugi / “They’re no longer with us.”

2: Left in the dark / “You came home early.”

3: Fine line / “We’re the same.”

4: Everybody lives, Nobody dies / “I wanted to make you proud.”

5: Time travel / “Stay behind me.”

6: Mistaken for related / “Of all the days you could’ve showed up?”

7: Black sheep / “You…. don’t know who my father is?”

8: Found family / “You did what?”

9: Thunderstorms / “Happy Birthday.”

10: Snuggling / “I am X, Son/Daughter/Child of Y.”

11: Hero and Villain / “It’s for you. It’s always been for you.”

12: Sharing Secrets / “You’re not a disappointment.”

13: Rituals / “I miss you.”

14: Bring your child to work day / “I made a mistake.”

15: Stars / “I despise you.”

16: Reassurance / “Where have you been?”

17: Ice skating / “And here I thought you had changed.”

18: Family heirlooms / “You remind me so much of her. It pains me to look at you.”

19: Embarrassment / “We’re a team now.”

20: Broken bones / “Why did you leave?”

21: Formal wear / “Do you still miss me?”

22: Miscommunication / “I forgive you.”

23: New skills / “I don’t feel good.”

24: Free at last / “I won’t let anyone hurt you.”

25: Holidays / “You made this for me?”

26: Beach day / “I promise.”

27: Mentors / “You promised you’d never leave.”

28: Reunions / “That’s my kid!”

29: Road trip / “Why did you come back?”

30: Pride / “I have your back.”

31: A new year / “I’m sorry.”

Alternative Prompts: 

1: Classified

2: Pets

3: Truth serum

4: "Thank you, for coming back."

5: Sunrise

6: Courting

7: "You wouldn't understand."

8: Unconditional

9: Gifts

10: "Do you still love me?"

[antwriterr]

An Archive of Our Own, a project of the Organization for Transformative Works

Chapters: 1/1 Fandom: Marvel Cinematic Universe, Spider-Man (Tom Holland Movies), Iron Man (Movies) Rating: Teen And Up Audiences Warnings: No Archive Warnings Apply Relationships: Peter Parker & Tony Stark, James "Rhodey" Rhodes & Tony Stark, Peter Parker & James "Rhodey" Rhodes Characters: Peter Parker, Tony Stark, James "Rhodey" Rhodes Additional Tags: James "Rhodey" Rhodes & Tony Stark Parenting Peter Parker, Peter Parker Needs a Hug, Tony Stark Has a Heart, Insecure Tony Stark, Pre-Iron Man Tony Stark, Bisexual Tony Stark, Tony Stark Has ADHD, Protective James "Rhodey" Rhodes, Mentioned Harley Keener, Peter Parker is a Mess, Awkward Peter Parker, Peter Parker-centric, Time Travel, Discord: DadDecember, DadDecember2025, Not Beta Read, Mentor Tony Stark Series: Part 19 of irondad cinematic universe Summary:

Tony drummed his fingers against the wheel. “Be honest. Am I cool?”

Peter blinked. “What?”

“In the future,” Tony said, voice tightening with something that sounded almost like insecurity. Almost. “Am I—y’know—cool?”

Peter stared. This was the first thing he wanted to know?

@daddecember day 5: time travel

[shifter-says-ow]

fandom: hazbin hotel

desc: (trans) vox is dealing with postpartum depression and having to cope with alastor leaving (set two weeks after he left in my au). their daughter Victoria's coos metaphorically drag him out of bed.

tws: unexplicity stated postpartum depression

prompt: sunrise

dad december day 6

@daddecember

The first few days after Alastor disappeared were…hard. Vox was reasonably pissed- Alastor left 3 days after Vox gave birth with no warning or even a note when he left.

But it didn’t change how much Vox loved his daughter, Victoria- he wouldn’t blame her for the sins of her other father. He knew it wasn’t her fault Alastor left.

Vox thinks any few days after birth must be hard- and especially so if your partner who you loved and trusted left in the middle of the night while you were still recovering.

When Victoria’s a couple weeks old, things get a little easier. He still is exhausted, as a single parent of a newborn would be. But his days aren’t as heavy as they were early on…well, at least, for the most part, some days are far worse than others.

Vox is having a particularly awful day, waking up before sunrise and immediately beginning to sob into his pillow. He doesn’t even know what brought this on besides the relentless metaphorical weight on his heart. He’s experienced this before, of course- he’s had children before, and was used to something akin to it after giving birth, but he had never experienced it this badly before. 

He feels foolish when he cries, but it’s really the only thing he can do right now.

He’s considering not making the effort to get out of bed for another few hours when he hears Victoria cooing to herself in her bassinet a few feet away, which seems to be the thing to temporarily drag him out of the metaphorical sludge he was so deep in just  a few moments before.

Vox lifts his head from his pillow, slowly sitting up, taking a deep breath and wiping the tears away from his face. It wasn’t often that Victoria woke up content.

Vox inches over to the edge of the bed, slowly getting to his feet.

He walks over to Victoria’s bassinet, smiling exhaustedly at her. “Good morning,” he croons, stroking her cheek, his voice a bit rough from his sobs.

Victoria lets out yet another coo, her tiny hands finding her way to one of Vox’s claws.

Vox tilts his head at her, smiling softly. He gently lifts her into his arms, her head resting against his chest as she stares up at him with wide eyes, like he holds the entire world in his palm and not just her father.

Vox walks over to the balcony with her in his arms, careful to hold her secure. 

The sun hasn’t quite started to make its way up, but it won’t be much longer.

“Are you having a good morning, princess?” Vox asks his daughter softly.

She simply gums on one of his claws in reply.

“I’ll take that as a yes,” Vox says with a soft laugh.

For all the emotional turmoil Victoria’s other father, Alastor, put him through the last few weeks- Vox would never take it back if given the chance, if only for their daughter now in his arms.

Victoria hasn’t been outside very much yet- the first few days, Vox had been nervous of her catching some sort of virus from the wind alone- though now he knew that was paranoid and silly.

Victoria turns her head now, looking out at the view. The sun’s beginning to rise now, and she seems absolutely fascinated.

Vox smiles tiredly down at his daughter. “You see the sun?”

Victoria babbles happily, kicking her legs cheerfully.

Vox grins tiredly at her. “Someone seems to be enjoying herself,” he murmurs.

Sure, things were a bit rougher without Alastor to help out or wake up with their baby so Vox could catch up on some much needed rest, but Vox was handling it. He could be a single father just fine, even if some small part of him still missed Alastor and another, slightly larger part of him said that they didn’t need him.

Vox’s heart practically melts as Victoria gives a little yawn, the infant nuzzling her face into the crook of Vox’s arm.

Vox was absolutely going soft for his daughter, like he had claimed he wouldn’t while he had been pregnant with her.

…But looking at her now, in the present day, maybe he was okay with that.

[livsoulsecrets]

An Archive of Our Own, a project of the Organization for Transformative Works

Prompt fill for @daddecember 2025 Alternate Prompt Number 2: “Pets”.

Fandom: Me and Thee

Relationship: Thee & Marn

Content Warning: Pet Loss

Summary:

Thee is at a loss of what to do when Marn's pet fish dies, leaving her heartbroken. He ends up doing better than he expected.

Thee cradled her face with both hands, looking at the warm brown eyes that dictated his every breath. “Marn, my daughter, I’d bring you the moon if you asked me for it. There is nothing you could possibly ask for that I wouldn’t gladly give you.”

[dogwaterdish]

yayyy I made something for @daddecember !!

An Archive of Our Own, a project of the Organization for Transformative Works

I was yapping about jason & paul awhile ago I think, and I started a new wip about that stuff!

basically jason 'dies' in the burning maze, but comes back to life (or avoids dying ? not sure what actually happens but it doesnt matter really). however, when he manages to get back to the camps, he realizes that it's been a minute since his death. so, instead of rejoining his friends, he goes out on his own and becomes a wanderer. then, he meets paul on accident one night, and gets taken in by him. paul and jason know of each other, but they've never met, and they don't realize who each other are.

[yoshistack]

An Archive of Our Own, a project of the Organization for Transformative Works

Chapters: 1/1 Fandom: Dimension 20 (Web Series) Rating: General Audiences Warnings: No Archive Warnings Apply Relationships: Adaine Abernant & Jawbone O'Shaughnessey Characters: Adaine Abernant, Jawbone O'Shaughnessey Additional Tags: Hurt/Comfort, Thunderstorms, Astraphobia, Late Night Conversations, Good Parent Jawbone O'Shaughnessey, Daddecember 2025, Discord: DadDecember, Day 9: Thunderstorms, Post-Campaign 01 Season 01: Fantasy High Freshman Year (Dimension 20), pre sophomore year Summary:

Adaine has never liked storms—has always found their sounds discomforting ever since she was little. It's a fact that's only gotten worse since becoming the Oracle. Jawbone can't fix it, but he might be able to help.

Written for DadDecember 2025!

-

I found the prompts for @daddecember and something called to me about this one. So I had to

Hope you enjoy me projecting old childhood fears onto Adaine!

[starfellprophet]

An Archive of Our Own, a project of the Organization for Transformative Works

Title: Aftermath

Rating: G

Chapters: 2/2

Characters: Harvey Harvington, Original Child Character

Summary: Part 2 of the two shot. Harvey and Harper come out of the storm not feeling the best

Part of the Lightbound series.

Daddecember 2025. Prompt: "I don't feel good."

Additional Tags: Fluff, Found Family, Father-Daughter Relationship, Cuddling and Snuggling, Alternate Universe-Canon Divergence, Two Shot, Daddecember 2025, sickfic