1 - 20 of 380 Bookmarked Items in Alternate Universe - Underlust (Undertale)
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This is my first attempt at Kinktober!
Series
- Part 1 of Secret Smutty Skeleton Stash
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Bookmark Notes:
A SKELE-TON OF GOOD SMUT MY LORD
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Summary
Sans has put in the bone work.
For fifteen years, he's raised Papyrus.
Not even counting the time loop.
And now some pretentious ancient bones want to have a say?
Oh hell no.
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Said "ancient bones" are mortified.
How were they supposed to know the short depressed skeleton was barely two decades old?!
- Language:
- English
- Words:
- 200,233
- Chapters:
- 48/?
- Comments:
- 1,703
- Kudos:
- 1,298
- Bookmarks:
- 276
- Hits:
- 43,464
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Bookmark Notes:
Chapter 48!!!!
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Summary
Undertale Multiverse where the Sanses know each other, but with wings. Wings are an extension of a monster’s soul and are typically used as a form of expression or fighting.
Some of the AUs will not have wings, though, since they are technically alternate universes and can be made without them.
Series will consist of (probably) one-shots surrounding the characters, and I’ll probably take suggestions after the first two stories are done. Just because I make a character or relationship one way doesn’t necessarily mean I won’t write something else entirely if I like it, it just won’t be “canon” to the series.
(〜￣▽￣)〜- Words:
- 129,084
- Works:
- 10
- Bookmarks:
- 283
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Summary
It's not that Y/N had a bad life, just one that wasn't very fun or fulfilling. When you meet Papyrus and Blue, everything changes. When you learn your twin sister, Edwina, met them, you fear you've lost their friendship as you had so many that Edwina wooed away. But, to your surprise, Papyrus and Blue were just the beginning. Through a series of events not of your control, you find yourself even more integrated into the lives of several skeletons. Some don't like you and some do, but that's life.
And your life will never be the same.
*currently editing all chapters* Chapters 10/46 edited
Series
- Part 1 of Duchess Soul Series
- Language:
- English
- Words:
- 161,953
- Chapters:
- 46/46
- Comments:
- 1,885
- Kudos:
- 2,088
- Bookmarks:
- 427
- Hits:
- 56,498
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Bookmark Notes:
9 - жду когда всё отредактируют...)
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[how about instead of reader/oc finding the skeleton crew on an island we switch it up]
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After working particularly nonstop for 9 years after the machine mishap, the entirety of the skeleton crew had all collectively agree to go on a very needed vacation. Tell them WHY their plane just HAD to crash on some rando island with a......WHAT THE FUCK IS THAT!!!!??! -
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Summary
You find yourself sleeping in your car in winter. Being strong enough to get out of an abusive cheating relationship, you opt to sleep in your car rather than be stuck in a bad relationship. While you are wracking your brain to find a solution to your situation, you run into an old school friend and her pack of skeletal boyfriends. Your own situation not being the best, you want to avoid stepping into the situation, however one skelly just can’t let you freeze in the cold. What comes next is a story of betrayal, healing, and helping those that haven’t yet learned to help themselves.
Mutt didn’t like the human that the rest of his house has as a datemate, what he didn’t count on was ending up falling for the one person that might be able to help everyone in the skeleton household.
- Language:
- English
- Words:
- 568,406
- Chapters:
- 213/?
- Collections:
- 2
- Comments:
- 2,858
- Kudos:
- 2,067
- Bookmarks:
- 390
- Hits:
- 110,117
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Bookmark Notes:
11 DANG I LOVE THIS AUTHOR CREATION SO MUCJ JDBSKDBJSBD
-L2
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Summary
Sans is lost outside his timeline with some lost souls. Where is he supposed to go from here?
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Bookmark Notes:
3
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Summary
Where I'll be posting events that take place during the story Resonance.
This is supplementary material to a larger work and is written with the expectation of the reader having that context.Series
- Part 2 of Resonation
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Summary
A story of Undertale AU self-indulgence.
LOVE, love, smut, angst, edginess, and self reflection. A story about teamwork and friendship, with lots of puns, ships, and feels. Full of head-canons what might deviate from the original story and/or AU ideas.
Worlds collide when shortcuts resonate. Will they be able to find their way home?
Series
- Part 1 of Resonation
- Language:
- English
- Words:
- 241,287
- Chapters:
- 55/55
- Collections:
- 1
- Comments:
- 1,842
- Kudos:
- 792
- Bookmarks:
- 146
- Hits:
- 25,138
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Bookmark Notes:
23 chapter
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Summary
You were a normal human. You went to college, you had a life, friends, family, etc. Apparently, the void didn’t care much for happy endings, and you find yourself strapped to a table in an underground lab.
It’s fine, you have plot armor.
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Or, you get sucked into the void and your soul is placed in the body of eight-year-old Sans.
Arc 1: Heritage (1-7)
Arc 2: Hell (8-10)
Arc 3: Home (11-45)
Arc 4: Heart (46-59)
Arc 5: Hostage (60-?)Series
- Part 1 of How To Be A Human Being
- Part 1 of Hounds Of Love
- Language:
- English
- Words:
- 208,754
- Chapters:
- 69/?
- Collections:
- 5
- Comments:
- 1,907
- Kudos:
- 1,522
- Bookmarks:
- 296
- Hits:
- 46,889
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Bookmark Notes:
24
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58
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Summary
One day, nine gorgeous entertainment androids are all dragged to the same location somewhere on the Surface against their will.
They don't know where they are, but what awaits them may be their doom. The only way out is to work together.A king who thinks he has everything in control.
A shy singer, always living in the shadow of his famous cousin.
A gentle soul that wouldn't harm a fly and is always happy to help.
A prostitute looking for a way out.
A silent being that has seen nothing but horrors in his life.
A creature living among stars, ready to fight for his life.
A young, timid TV host that has a dark secret behind him.
A gloomy, fragile "freak" who never asked to be made.
And a confident, determined celebrity that will have to take the lead.-
Bookmark Notes:
Ayo? Classic wit da heat??
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Summary
I bring you the area where I will put everything that is short and mini-chapters.
Different topics that I like but i don't have the time to create a long fic…
I will try more different topics here and even i will try to make new ones.I will add a lot of names from other authors here since my mainly idea is to help other people find ideas and create their own stuff.
This area is for one shots, I think people calls them like that?
Unrelated stories that have only 1 chapter or 2 if i make a pov from Sans.And also i will add the first chapter of long stories here to make you feel the boom of a new story beginning.
That way you'll never miss one of my new fics and you will learn from yourself if you like the story or not.
I accept ideas and suggestion. (Inside my possibilities and own likes)
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Lust regrets looking out the window.
Series
- Part 7 of Two Doofuses in Love
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Summary
Horror runs into his ex at a party, and grabs the closest person next to him to pretend to be his boyfriend.
Series
- Part 3 of Two Doofuses in Love
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Your life wasn't anything special in your opinion. Your days mostly just included going to university lectures or bumming around in your apartment. That not so slowly began to change one summer, when you happened to make eye contact with a tall, dark and handsome... skeleton? Wait, that's a lot of skeletons... and are they supposed to be this handsy?!
Now you find yourself having to handle armfuls of bones and more puns than you could count time and time again but, honestly, you couldn't be happier!
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Female!reader being pulled into lots of domestic and fluffy situations with as well as growing closer to the many different Sanses and Papyri, with some romance finding its way in there, too.
(Discontinued but to be rewritten when I have the time)Series
- Part 1 of A Really Big Bone-anza
- Language:
- English
- Words:
- 126,635
- Chapters:
- 23/23
- Collections:
- 1
- Comments:
- 276
- Kudos:
- 474
- Bookmarks:
- 158
- Hits:
- 21,321
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Bookmark Notes:
chapter 5
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Summary
A collection of fics with various pairing combinations involving either Edge (Underfell Papyrus), Stretch (Underswap Papyrus) and Pink (Underlust Papyrus)
- Words:
- 3,733
- Works:
- 10
- Bookmarks:
- 3
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Summary
Pink is having some doubts. Lucky for him, he has two wonderful partners to help him with that.
ONE-SHOT
Series
- Part 4 of Edge/Stretch/Pink Collection
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Bookmark Notes:
We Can Be Messes Together by 01A_Stella
Summary:
Pink is having some doubts. Lucky for him, he has two wonderful partners to help him with that.ONE-SHOT
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Series
- Part 12 of First Kiss Prompts
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Flash Fics for Whittney by Mochimunchies for WhittneytheScorpionSuccubus
Fandoms: Undertale (Video Game)
20 Apr 2025
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Summary
A short collection of flash fics/oneshots written for Whittney!
Includes:
Chapter 1 - Errorberry (Mer AU)
Chapter 2 - Bad Sans Poly + Star Sans Poly
Chapter 3 - Errormare + Errink
Chapter 4 - Horrorlust
Chapter 5 - CrossmareSeries
- Part 4 of Flash Fiction Giftfics
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Summary
If you break my heart I'll die
So be sure that it's true when you say I love you
It's a sin to tell a lieA collection of drabbles about nsfwshamecave’s Underlust AU, featuring Romeo (Underlust Papyrus) and Benvolio/Benny (Underlust Sans). Exploring personalities, headcanons, and a little worldbuilding to the melodious, bittersweet love ballads of traditional pop, easy listening, and more.
(Despite the source material, these actually won’t have any smut or anything too explicit- some suggestive content and swearing/vulgarities tho! Ie. Not NSFW but viewer discretion is advised)