1 - 20 of 283 Works in Light Blue Soul Human (Undertale)
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Without History (maybe some things should stay forgotten) by Human_with_no_life
Fandoms: Undertale (Video Game)
15 Oct 2025
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Summary
After the barrier breaks, Monsters and Humans have learnt to live together on the surface, there is still many mysteries hidden in the underground. Most of them will stay forgotten or buried forever.
Until a ‘promise’ Sans made with Frisk leads to him telling a long and complicated story. His story, well not exactly 'his', but with as many questions as it answers, it seems to raise more. One thing is for sure; this tale will change everything.
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Adventure Tale by Kaboom91
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Adventure Time (Cartoon 2010)
14 Oct 2025
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Summary
After countless runs, something goes wrong, and now humans and monsters alike have been pulled into a strange new land with its own rules and its own dangers. Come Along With Me for the crossover nobody asked for, its ADVENTURE TALE!"
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Scattered Souls by Eris_void
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
13 Oct 2025
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Summary
In the fight with Omega Flowey, when Frisk calls out for help and the souls answer the call, one does something unexpected causing a reset that brings all the souls back to life in the location where they drew their final breath.
Now, with these 8 souls lost throughout the Underground, they have to manage their way. Will they see the sun? Simply die in the pit once more?
Will the lost souls find what they seek?
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Seven Minutes In Heaven by Manchaalegre31
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
12 Oct 2025
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Summary
Frisk's journey through the underground brought them many things, new friends, a family and two ghosts on their shoulders, well, at the end of that journey only one remained, the other had revived along with the others humans.
Or: Copowtober day 11 Seven Minutes In Heaven
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Dragon Blaz(ing) 2: Tragedy In Blue by paradoxcloned, TGClmao
Fandoms: Deltarune (Video Game)
11 Oct 2025
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Summary
I uncovered a mysterious Dragon Blazers 2 ROM hack on an old, obscure forum. To help everyone get the full experience, I've decided to novelise it! Hopefully this makes my exploration make more sense!
Cel, resident college student and now begrudgingly a protagonist, gets heroism forced on them by the hand of fate. Stuck a world based on another's trauma, their real mission becomes clear: they've gotta get out of here.
This is a metafiction story; both about a non-existent creepypasta ROM hack, the changing tides of Deltarune's fate, and an author getting caught up in it.
Perhaps it means something. Perhaps it doesn't. But it exists, and that's what matters.
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Summary
Aide is a 10 year old human child who falls down Mount Ebott one cold night. They bear the light blue soul of PATIENCE. They are untrustworthy of every monster around them, especially those who show any ounce of parental kindness..After escaping the ruins, they meet a wise and powerful elder in Snowdin, who offers to take them to Waterfall. Will Aide escape the underground and return home? Or was their fate already sealed from the start? ..And does that mean that elder is only delaying the inevitable? I guess you will have to be patient and see.
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Hi!! This is my first fanfiction that I'm posting on AO3, I hope you guys enjoy it!! (By the way, Aide uses They/Them! Please keep that in mind!)
- Language:
- English
- Words:
- 5,318
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 8
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Summary
You lived an ordinary life, going with the flow, until at one point, you stopped living.
..
.
For some reason you are alive.
Hmm, not that you're complaining, but the last time you checked, you were definitely dead. And you definitely weren't a skeleton.-
A man is reborn into a Papyrus of an alternate universe, which, in fact, he created himself. Oh, if only it weren't for those memory lapses...
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Undertale Cyan by Shinusawa
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
06 Oct 2025
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Summary
Cyan soul... 16-year-old Ersten "Er" Kreutz: a thinker, even a philosopher, a bit of an anime fan, the owner of a REAL rebellious spirit and simply a lover of thinking globally, what is his path?
- Language:
- Русский
- Words:
- 984
- Chapters:
- 1/?
- Hits:
- 13
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Summary
The Seven (Plus Chara) have done it; they've ended the imprisonment of all monsters. With Frisk as their ambassador (and Papyrus as mascot), things are sure looking up!
But in the background, things are at play, events that could threaten everyone's happy ending.
After all, just because one story ends it does not mean the Tale has.
Series
- Part 2 of Hall of the Seven
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Summary
In the infamous town of Mt. Ebott, rumored to have had a monster sighting only ten to fifteen years prior, Yasmin Rose Maxwell struggles to find whether she is the only kid to feel the way she does.
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- Part 1 of Undertale: Soulful Dreams
- Language:
- English
- Words:
- 498
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 9
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Summary
The Prophecy of DELTARUNE tells of seven legendary fountains that will need the power of seven human SOULs to be sealed. Join Kris, Susie, their friends, and six other humans as they work together to save the world… and banish the ANGEL. Grouptale but in Deltarune. Sequel/spinoff to Grouptale.
Series
- Part 2 of Grouptale
- Part 1 of IHF deltarune brainrot
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Summary
Or: The one where an adult Frisk wakes up after their funeral, back at the beginning of everything. Of course, they know how to navigate all their adventures underground, but... Does anyone want to tell them what kind of sin they committed? After waking up each time, in different timelines, some of which they even know they generated, and others that they themselves didn't commit? Yeah, this isn't going to happen (it happens anyway).
Series
- Part 3 of Random Writing
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The light blue soul human falls in the Underground - they meet Toriel and think... this is fine, actually.
- Language:
- English
- Words:
- 436
- Chapters:
- 1/?
- Kudos:
- 4
- Hits:
- 43
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UnderTime by WalrusSilverfish
Fandoms: UnderTime (by WalrusSilverfish), Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
21 Sep 2025
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Summary
He had kept himself quiet about it. Why? Probably because he trusts his father's and sister’s judgement. After all, he still lets him be the Royal Scientist, and she still works with him in the lab.
But he can not keep himself silent anymore. Someone needs to talk to that scientist. Now is the time to visit him and ask some questions.OR
Togore is mad at Gaster. See where this goes...
Series
- Part 1 of GroundTale AU
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Deltarune: The Lighter side of the Dark by Gabe_reviews0408
Fandoms: Undertale (Video Game), Deltarune (Video Game), Undertale Yellow (Master Sword Video Game)
16 Sep 2025
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Summary
Asriel is forced to be transferred to a new college where he meets a plethora of new friends and discovers a new world hidden in the dark where he begins to dig up old trauma and face the truth of what really happened back in hometown. and his friends also dig up their own trauma because they were bound to be dragged into this.
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Gaster decides that to add an Asriel subplot to the story of his Deltarune which may or may not end up changing the events of his story however it doesn't matter as the results will still be Very, VERY INTERESTING
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Off the Record by theriveroflight
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
14 Sep 2025
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Summary
Five children on Clover's missing poster, and one who was not.
(Or: deconstructing the images of the others.)
Series
- Part 1 of a happy ending [revived!humans]
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Villains are everywhere (that's how I know that I'm the hero) by Kofhearts13
Fandoms: Undertale (Video Game)
08 Sep 2025
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Summary
Just a little thing I wrote with my ocs, Erin and Rye. This isn't cannon to my au, but I might make a separate au for this because I really liked writing this.
Anyway, this is just my ocs going through the Mettaton EX fight.
Series
- Part 3 of Patience and Bravery
- Language:
- English
- Words:
- 2,711
- Chapters:
- 1/1
- Hits:
- 4
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I cant fucking stop rewriting these little shits by CouldntThinkOfUser
Fandoms: Undertale (Video Game)
07 Sep 2025
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Summary
oops i did it again
- Language:
- English
- Words:
- 419
- Chapters:
- 10/11
- Hits:
- 95
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DELTATALE: UNDERRUNE by J88888888
Fandoms: Undertale (Video Game), Deltarune (Video Game)
01 Sep 2025
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Summary
the fun gang get dropped into random spots in undertale