1 - 20 of 63 Works in AFAB Frisk (Undertale)
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Summary
When ghosts haunts the past of human and monster alike, the lingering spirits of two band together to piece together a past lost, and a WISH forgotten.
This is a reimagining of the Undertale AU called StoryShift. You can find the original/reboot here:
https://ut-storyshift.tumblr.com/post/181157867174/ut-storyshift-reboot-official-part-one-and-only/amp
Series
- Part 1 of A Ghost Story
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Since Frisk has freed Monsterkind, they have been living on the surface together with Toriel since a few years.
Unknown to anyone else: Chara is bound to them. Over the years, once Chara got to deal with Frisk's annoyances, the two gotten a little closer.Now this night is different. Frisk feels the need to have a private moment for themselves to get the edge off, fantasizing about Chara watching them, but when fantasy becomes reality, Frisk and Chara have a somewhat awkward encounter at first, followed by a quick realisation that the two have liked another much more than they ever anticipated.
Chara can not be seen by anyone other than Frisk, and uses that to their advantage for some fun :p
Though they have their fun, it all stays rather soft. They're gentle with another, they are dorks in love not knowing the other thought the same until today— -
Chosen Family by PUPPYQUEEN_OF_GACHA
Fandoms: Undertale (Video Game), Deltarune (Video Game)
13 Sep 2025
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“Can we keep them?” Kris asked, the words tumbling out before they could stop them. Chara, not expecting that comment, says. "Keep!? What am I? A dog?" Frisk snickers. "You act like one sometimes."
Chara dramatically gasps. "Frisk! You're supposed to be on my side!" Frisk just giggles in response.___________
Toriel tells Kris she's going to visit a friend that works in the same place they were adopted from, Kris is bored so they ask to tag along. What they didn't know is that they'd meet two children, who's human like them.
Long story short, they get attached. -
12 Skeletons, 3 Ghosts, 2 Harems, And A Gamer by syst3m_of_3rr0rs
Fandoms: Undertale (Video Game)
10 Aug 2025
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You're thrown into the world of your favorite fandom/game where you end up living and interacting with the most cliché storyline in the entire universe of anti-harem fanfictions.
That's it.
That's all it is.
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Ever wonder what it's like to live in the world of your favorite fandom with your favorite characters? No? Then this book ain't for you. But if you have, then strap on in and enjoy the ride guys, gals, and nonbinary pals, cause this is gonna be the adventure of your life!
(WARNING: Slow updates, [probable] short chapters, major chapter editing. Also, some characters might be a bit OOC.)
Previously titled; "It's sad, I'm sad. I miss you. How did this happen?"
Series
- Part 3 of Undertale Stories
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After doing everything the right way in the first timeline, Frisk was compelled to do the genocide route for what they felt were "good" reasons. In doing so, they have broken utterly and become something new. Something absolutely devoted to Sans, and not remotely sane. Now they are striving to fix everything and find their path forward. What the hell is Sans supposed to do now?
(This is not an erotica story - it's a drama / sort-of-romance that eventually gets really spicy)
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Kamen Rider Delta: Hyperrune by KamenRiderJack1282734635545
Fandoms: Deltarune (Video Game), Undertale (Video Game), Kamen Rider - All Media Types
15 May 2025
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A new variable has made themselves known, an unknown group calling themselves "The Delta Vanguard" has been opening up Dark Worlds to cause the Roaring as well as creating monsters called "The Darkened". Now it's up to the FUN Gang as well a few new faces, old and new, to show them why they shouldn't mess with both of their worlds.
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IMPORTANT: If things continue how they are in the country I reside, I may have to take down every fanfic I've uploaded until I'm able to move somewhere else. If you enjoy my works, please save them somewhere safe on your computer, and I ask that you don't reupload them and be patient for my return.
Frisk falls into the Underground.
They have no memories because they have never had any to start with.
As an adult, not knowing how to talk or walk or read is going to make saving the entire world very difficult.
And, damn it all, Chara is NOT okay with being replaced!
But once they calm down, (and Frisk takes off their old clothes), things will be JUST fine.
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Clover’s been gone for a long, long time. Getting over the little cowpoke’s death hasn’t been easy. What happens when the sacrifice finally pays off?
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After freeing monsterkind from the Underground, Frisk found themselves living a happy life on the surface. With Toriel having taken them in a loving home, everything should be fine.
Yet the human found themselves lonely. Longing for a voice they could not reach.
A voice belonging to Chara.
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If you’ve read any fluff heavy post true pacifist fics before then this’ll probably be pretty tropey as it’s mostly just my take on it. The more I write the more it’ll diverge and take its own direction but the beginning will be quite generic as I’m just setting the groundwork.
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Stubborn twenty year old Frisk makes a secret and dangerous expedition inside the mysterious and quiet MT. Ebott, lead by only the strange dreams they've had since they were a kid, on their way to somehow make a compromise with the soul stealing beast inside, whom they come to know as The God Of Hyperdeath... they can only hope the rumors they'd heard of him aren't all true.
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Undertale Red and Yellow, also Cyan, Orange, Purple, Green and Blue by Lethargious
Fandoms: Undertale (Video Game), Undertale Yellow
02 Aug 2024
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As Frisk left the Underground, it seemed that they have regretted it.
The Underground have what they wanted. Good food, good friends, bad laughs.
Is what they have to do, really worth it?
Should they have stayed?To their luck, or unluck, Flowey proposed a solution.
However, they may or may not have awaken the souls of the fallen by asking for their help.Inspired by Undertale Red and Yellow mod for Undertale by Shinix
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The one thing out of everything Frisk had learned about Sans over their last year living in the Underground — which was very little, actually — was that he had a weird thing for food.
They understood it for the most part — though Sans could seem to eat it was more of a textural thing. He had no tongue nor nose to understand the sensation they took for granted, so he lived through Frisk.
Also known as : Sans gets really into hand-feeding Frisk a cookie.
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everything stays (why does it have to change?) by weylindreemurr (orekid)
Fandoms: Undertale (Video Game)
20 May 2024
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You've always been told you were long and lanky, tall for your age and skinny as a result of so many growthspurts.
You didn't really want that to change now that you were done growing.
OR
Frisk has some old habits from before they fell into the Underground, but having a good home life doesn't fix everything magically.
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Frisk is tired of their life and wants out, they decide to go to Mt Ebott and disappear.
Luckily for them their story changes for the better after a long taxing journey of self hatred and trust issues.
Join them on their adventure to getting the help they need!
(A/N slow updates, I will use my own experience so please be patient if I need a break from the story!!
Also the tags will be updated as the story goes on!)
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Along with the oceans, global tensions were rising, government officials were lying to the people straight out of their asses, children were being born with literal fucking superpowers, being taken away from their parents for those powers, and politicians would tell you that everything was under control on the TV, along with all the other propaganda bullshit they’d spew straight into the ears of the people.
And then, before they knew it, biological warfare had broken out, on February 14th, 2169. And people started to wake up from the “American Dream.”
(Oh yeah, retcon time!)
Series
- Part 2 of Zombierune
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Frisk and Flowey have grown up together, became best friends, and dated in secret for years.
But the thing about dating in secret is that you can't tell anyone that it's an insane adventure when you're a monster stuck in the body of a flower and a kind human that only wants to understand, and things can only get even more insane when both parties want to take things.. even further...
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This was released for the 8th Undertale Anniversary, I felt like this story made sense... It developed as time went on...
-EY
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After a meteor shower, Kris is forced to go to a horrible place… SCHOOL! After having barely any sleep… but then… oh, just look at the zombie tag, I’m sure you know what happens next. (If there are any grammatical or spelling errors, I would appreciate if you could point them out for me.)
Series
- Part 1 of Zombierune
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[This has been abandoned... at least on AO3. You can access it on Tumblr, either indirectly here or directly here. Note that I won't be able to edit this, so if both links stop working... check my profile for a link to the blog.]