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High School Of The Anomalous by EmeraldOnion, TheOtherOnion (EmeraldOnion)
Fandoms: Undertale (Video Game), Undertale Multiverse - Fandom
20 Sep 2025
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Summary
After witnessing Error do the impossible, Blue is determined to get closer to Error and learn about his secret. The world of supernatural abilities, however, is much more dangerous than he could ever expect, and now that he has fallen into the rabbit hole, there is no turning back.
Luckily, Blue will not have to do it alone.
Unluckily, Blue will not have to do it alone.
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Bookmark Notes:
Holy shit this is an amazing au, on chapter 8 rn, the writing and different messaging styles for different characters is absolutely beautiful
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Summary
Stories related to the STTMH multiverse. The main story, drabbles, and smaller character interactions will be included.
- Words:
- 123,375
- Works:
- 5
- Bookmarks:
- 30
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Bookmark Notes:
this is so good. bites you bites you bites you bites y
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Bookmark Notes:
1- (continuing)
2-5 : Completed one-shot
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Sans Tumbles Through the Multiverse Headfirst by PapilioVolens
Fandoms: Undertale (Video Game)
22 Jun 2025
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Summary
Sans has finally managed to fix the reset issue. It only required the deletion of a vital character. The barrier is broken, and time finally begins to move again. Recovery is slow, but Sans finds solace in his dreams. By the time he realizes his dreams of other universes are real, he has already grown attached to their residents. And then he's attacked at home and is thrust into the multiverse proper. He finds things very different from how he expected. His old friends don't recognize him, and some of them appear suspiciously older.
It doesn't take long before Sans starts to suspect that he may have a larger role in the multiverse than he predicted.
I wanted more Classic adventures through the multiverse, so here's my contribution. And cause I'm me, I can't help but try to make a saga out of it.
Features Classic being Classic, strange multiversal mechanics, and a sleep-deprived author who 100% knows what they are doing
Series
- Part 1 of STTMH
- Language:
- English
- Words:
- 119,538
- Chapters:
- 28/?
- Collections:
- 8
- Comments:
- 1,637
- Kudos:
- 1,819
- Bookmarks:
- 399
- Hits:
- 51,099
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Bookmark Notes:
i've not been in the utmv fandom for some time, but jegus christ this is REALLY good. i remember a few years back having to scroll and scroll and scroll to find ANY good fics centered around classic and i think younger me would have been ECSTATIC to find a fic like this, so. yeagh. incredible work!!!! i fucking love everyone's characterisation!!!!! other who are you!!!!!!!!!! classic take care of yourself!!!!!!!!!!!!!! it's so good!!!!!!!!!!
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Bookmark Notes:
chapter 28
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Stitched in Ink by LeviosaDab, MagykGremlin (LeviosaDab)
Fandoms: Undertale (Video Game)
29 Jul 2025
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Summary
...“just adding two and two—i’m a scientist, and you are dumpster diving. i think we could help each other.”
The skeleton just continued to stare, warily locked onto his lab coat instead of him as they stepped back.
...“just… give it a day or two?”You never knew what you might find in the dump. But out of everything he'd brought home for a project, Sci never expected a young homeless creature to be one of them.
Problem is, feral kids don't make for easy science experiments. Now Sci's stuck with Ink: a small, strange skeleton with a past neither of them know and a future they know even less.
It's going to be hard keeping them safe in their quest to fit their multiverse.-
Bookmark Notes:
ch18
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Summary
bad sanses poly oneshots !
error is there for a hot minute
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Perdidos en la traducción (Lost in translation) by Estel_dreamer
Fandoms: Undertale (Video Game)
10 Dec 2024
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Summary
What if Cross only spoke Spanish? What if Ink got tired of trying to communicate with someone who couldn’t understand him and so just abandoned him to his empty white void? This is the monster Nightmare ends up finding.
Series
- Part 1 of Nightmare’s gang as a family drabbles
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Summary
Create-Tale, an unknown location between the empty space of the multiverse that separates the bubble of sketches from the antivoid. Who would have thought that the locals of both places would be in charge of the most important possession in the multiverse?
The world of the creators, powerful souls who follow these guardians and worship them as warriors. However, that security would fall behind human curiosity. After all, they are not fictional, like the creations. Or rather, their creations.(This story contains sensitive content; it is primarily intended as a horror story.)
(and yeah, errorink is canon here, guys /jk)
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Summary
You really should try living a little, but it's kind of hard when you're literally Death. The other immortals might be your best shot at happiness, even if it'll probably look really bad to outsiders that the three dark sides of the multiverse's balances are hanging out.
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Summary
The first story of the series. Follows our protagonist through his rebirth and until he (re)enters the Multiverse.
In case you couldn't tell I suck at summaries, I'll get better eventually, probably.The Major Character Death Warning is temporary and happens multiple times btw, it is a little confusing at first but you will understand as the story continues.
Prologue: Rootverse's Collapse (1)
Arc 1: Rebirth (2-7)
Arc 2: Meeting Familiar Faces (8-?)
Sub Arc 2.1: The Teeth Incident (20-41)
Sub Arc 2.2: The Magic Incident (42-50)
Sub Arc 2.3: Time For Shopping (51-59)
Intermission: 1st Major Time Skip (60-62)
Sub Arc 2.4: The First Human (63-?)Series
- Part 1 of Miseries of Metempsychosis
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Bookmark Notes:
32
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Summary
- UPDATING EVERY TUESDAY -
After enduring centuries of constant wars and chaos across the multiverse, the gods stepped in to address the exhaustion felt by everyone. Tired of the ongoing pain and battles, a treaty was proposed by the guardian of positivity to prevent the multiverse from falling apart.
The deal outlined a halt to creation and destruction, urging a balanced use of positivity and negativity without exploiting their power. Gods and immortals were forbidden from entering universes unaware of their existence to prevent unintended harm.
Unaware that the creators were listening, the guardians and gods had to accept these rules permanently. Now, tasked by the creators, the guardians must guide and reform the protector and destroyer of the universes to protect their existence from a permanent looming threat.
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Bookmark Notes:
Errormareeee
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Working through issues with a shunned diety by Hellian_Eden, Jesus_fox
Fandoms: Undertale (Video Game)
05 Sep 2025
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Summary
The Multiverse is vast and nigh infinite, possibilities, concepts, the very function of a world's reality only limited by sheer creativity.
Within this realm, Dreamtale exists as an enigma, plucked from another Multiverse entirely. The tragedy of it's Story forced to continue beyond it's Endings, for it forced the concept of Balance into the Multiverse's rules. Now open-ended, the only two Characters wanders throughout the Multiverse as one of it's Outcodes.
Dream broke out of stone to one colorful and curious Inkblot, so much to comprehend for someone so small. But alive nonetheless.
Nightmare woke up freshly dead.
Au: Get it? Cuzhe died lmao
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Summary
It was instant.
Error didnt even blink as classics teeth gently clacked against his own, his face blooming in a soft navy at the realization of what the lazy skeleton had done
"Huh.....you didnt crash..."
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Bookmark Notes:
Spur of the moment by Reebs_18
Summary:
It was instant.Error didnt even blink as classics teeth gently clacked against his own, his face blooming in a soft navy at the realization of what the lazy skeleton had done
"Huh.....you didnt crash..."
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Summary
Running through that forest you felt relived
No more fighting no more rings
No more experiments
No more cages
And most importantly your bitty where with you
Wait…are those…more skeletons!?-
Bookmark Notes:
2
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Summary
Overdosing on emotions was quite common for Ink. Whether it was by accident, sipping too much without realizing it, or a choice that didn’t go as planned, too much of one paint color would lead to unpredictable consequences.
It also led to unpredictable situations.
OR: Five times Ink overdosed on his paints, and how that led to their Multiversal Truce.
(Was written for the Wingedverse, but honestly, wings aren’t that big of a plot point here.)
Series
- Part 7 of Winged Multiverse
- Language:
- English
- Words:
- 19,660
- Chapters:
- 3/3
- Collections:
- 1
- Comments:
- 65
- Kudos:
- 1,519
- Bookmarks:
- 212
- Hits:
- 20,172
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Bookmark Notes:
fav
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Summary
You are a shapeshifter with the rare ability to turn into an orange fox—a secret you’ve kept hidden, knowing humanity once hunted your kind. Living near Ebott, you slip into the night to run free, though the fear of discovery always lingers. Meanwhile, Sans and Papyrus have unknowingly welcomed a manipulative woman named Kora into their lives.
Behind her sweet facade, Kora is a gold digger using the brothers for wealth, status, and comfort, willing to lie, fake affection, or even blackmail them if needed.Eventually Kora stumbles across your apartments terrible condition, deciding to become “friends” with you and inviting you to stay in the mansion with her and her apparent mates. It started off fine, until she began to spread lies— rumors.. Even blaming you for mistakes, stealing. And god who knows what else.
Maybe you can help these skeletons see past whatever game she’s playing at? (Anti-Harem, That’ll switch into a actual harem..)
As well as machine chaos.
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Bookmark Notes:
13
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The Magnificent Sans' Guide to Serving Your New Evil Boss by luckyfinch
Fandoms: Undertale (Video Game)
10 May 2025
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Summary
Swap gets fed up one day and declares that he's going to go work for Nightmare instead.
Ink and Dream didn't think he was serious.
or: the one where Swap (in a last-ditch-effort to get away from Ink & Dream) turns to villainy!!!… unfortunately, his new evil friends seem to insist on making him do annoying things like “eat daily meals” or “sleep.”
[SLOW UPDATES]
Series
- Part 2 of Swap’s Magnificent Evil Guide
- Language:
- English
- Words:
- 26,549
- Chapters:
- 13/?
- Comments:
- 244
- Kudos:
- 1,629
- Bookmarks:
- 280
- Hits:
- 24,178
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Bookmark Notes:
Chapter 13
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Summary
P̰̙͐ropȩ̺᷿͊᷈᷈̐r᷇t̢̉y̯ of̬̊ ͑͠E̶᷁r͙ͤr̶͖ỏ͍̚rͪ
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Rë́t̗̦̣ͪ͗͘u̯̚r̥̬̰̿̉᷈n ͡I̎᷉̅ͤf̰ F͎͙̓̂͠oůn̹᷊͙̂̄dͧDO ̴̝̖͘NO̒T̗͠ ̗̃R͑EAD.̑ ̭᷿̎̅(ͫP̏ḻ̤͐e᷿͉͑̃̐͑͝a̘s̴eͩ.̪͑ͨ̄᷾̚͠)
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MERCY is a powerful force.
Even the mightiest beasts bow before it.
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Summary
It all started with a plan: bind Ink to him, let Dream jump to his own conclusions and scavenge whatever was left of them; rebuild Ink after his own needs and desires. He really should have kept it that simple.
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6 times Nightmare was called an opportunist vs the one time he was not.
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Bookmark Notes:
Have been read
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Summary
Error hates the multiverse. It took his brother, and now he's going to erase every stupid glitch in this abomination of a multiverse.
Ink loves the multiverse. It's why he exists, after all, and he's always happy to help the Creators with whatever they need!
Dream and Nightmare are tired. Suddenly encountering two god-children that have very questionable morals will do that to you.
The brothers take care of the children, their fight between Negativity and Positivity becoming a fight between two balances of the multiverse. Little does anyone know, the brother Error has been looking for all this time has in fact been Ink.
Neither of them know it, though. (Error can't recognize Ink. After all, the brother he knew wasn't like that at all, and didn't have the name Ink. Ink never had any memory of a brother. The multiverse is all he knows.)
Or: I really like Ink and Error's frenemy dynamic and I went OH BUT WHAT IF THEY WERE ADOPTED BROTHERS AND ALSO CHILDREN and I thought let's add in some fgod and fgoc because why not, angst, haha (And there is a sad lack of fgod/fgoc fics where Ink isn't a huge jerk)
Summary is subject to change because I just can't get it right
- Language:
- English
- Words:
- 38,041
- Chapters:
- 11/?
- Collections:
- 1
- Comments:
- 339
- Kudos:
- 544
- Bookmarks:
- 81
- Hits:
- 9,106
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Bookmark Notes:
The Multiverse Stole My Brother by Lost_And_Alone
Error hates the multiverse. It took his brother, and now he's going to erase every stupid glitch in this abomination of a multiverse.
Ink loves the multiverse. It's why he exists, after all, and he's always happy to help the Creators with whatever they need!
Dream and Nightmare are tired. Suddenly encountering two god-children that have very questionable morals will do that to you.
The brothers take care of the children, their fight between Negativity and Positivity becoming a fight between two balances of the multiverse. Little does anyone know, the brother Error has been looking for all this time has in fact been Ink.
Neither of them know it, though. (Error can't recognize Ink. After all, the brother he knew wasn't like that at all, and didn't have the name Ink. Ink never had any memory of a brother. The multiverse is all he knows.)
Or: I really like Ink and Error's frenemy dynamic and I went OH BUT WHAT IF THEY WERE ADOPTED BROTHERS AND ALSO CHILDREN and I thought let's add in some fgod and fgoc because why not, angst, haha (And there is a sad lack of fgod/fgoc fics where Ink isn't a huge jerk)
Summary is subject to change because I just can't get it right
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Bookmark Notes:
Restante
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- Words:
- 23,910
- Works:
- 11
- Bookmarks:
- 18
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Bookmark Notes:
me too
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