Swap Bros Shenanigans
imtired42
  • Reads 310
  • Votes 23
  • Parts 16
  • Time 44m
  • Reads 310
  • Votes 23
  • Parts 16
  • Time 44m
imtired42
Complete, First published Nov 23, 2023
alternateuniverseblueberryblueberrysansskeletonunderswapunderswapsansundertaleundertaleau
OLD WRITING
Rewritten version on AO3 under the title Home

Sixteen-year-old Sans is "peacefully" walking through Waterfall, feeling the rain on his bones. He's not exactly pleased with the situation, but he can't afford to care.

But to his surprise, another skeleton kid, slightly shorter than him, approaches shyly.

Enjoy and read well ✨
Word Count: 9,351
(CC) Attribution-NoDerivs
alternateuniverseblueberryblueberrysansskeletonunderswapunderswapsansundertaleundertaleau
Table of contents

16 parts

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The One Thing That They Care About (Sans AU x Reader x Papyrus AU) by voltimer
20 parts Complete
Y/n L/n. A special human with a special SOUL. Yes, her Soul Trait is something new. But other than her SOUL trait she has another secret. One day, while she was at the surface with Frisk and Sans. 6 skeletons appeared out of nowhere, making raging screams and chaos as maniac laughter filled the air in their wake. Soon they found Classic Sans with Y/n & Frisk. But when they saw Y/n, they were curious of how she can wield magic powers and be brave. Soon they took Y/N with them, to their castle. Will Y/n tame them? Or will Y/n fail and suffer the consequences? Involving a Bad Sanses x Reader x Star Sanses plot. Along with various Alternate Sanses. #1 in badsanses at 17/01/2021 #1 in ausanses at 31/01/2021 #2 (Out of 21.8K) in nightmare at 24/02/2021 #38 (Out of 48.1K) in undertale at 21/05/2021 #3 in (Out of 3.42k) Cross at 18/12/2021 #1 in Dust (Out if 2.15k) at 18/12/2021
New Purpose (US!Papyrus x Female!Reader) by OreoDaSkeleton
28 parts Complete
Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful, absolutely innocent skeleton, smiling despite any given situation. However, Y/N finds out that Blue's wearing a different attitude outside of work. He's exhausted and working himself to the bone, using all he earns to pay for countless medical treatments and bills. He claims that they aren't for him, but keeps silent and won't give more details. Who's bills is Sans paying for and could Y/N find a way to help? **WARNING- Small Depressive episodes will be presented in this book. Read at your own consent.** Hello! It's Writer~San! None of the art/undertale au is mine, but the writing 100% is! Enjoy!!!
Blueberry Sans X Chara by Hazefrost
33 parts Complete
Chara is a young human who has decided to live in the Underground with her skeleton friends Papyrus and Sans. What will happen when she finds out that one of those skeletons is crushing on her? (An Underswap fanfiction) This book has lemons, dirty children!
Underswap love [complete] by Author-Dayo
28 parts Complete
this is a love story between swap sans and the reader, the reader falls runs threw MT.Ebott trying to escape her twisted guardians when she is shot into a massive hole. Lost and hurt in an unknown place she is saved by a kind man who takes her in and treats her like family. Obtaining powers and learning about herself in the underground she uses them for good and helps get everyone out. Determined to help the people she Loves and holding onto her Hope she fights to survive and free everyone. this is my 1st Undertale fanfic and I wanted to start with underswap~ (if I get some things mixed up I'm sorry)
AU Sans X Reader Long OneShots by mylittlepinkamena222
24 parts Complete
Just Sans X Reader No Lemon Cover by my homeslice tkdgirl222 I don't own any of the characters in these story Don't kinkshame me I know your here for the same reason I wrote these >:) Also these are for girls but you can change the pronouns and the girly stuff to guy stuff I don't care. @tkdgirl222 edits and helps write all of the stories.
Look How Far You've Come! by RavinaWolf
5 parts Complete Mature
(COMPLETED!) NSFW !! 18+ ONLY The Anti-Void is empty. There's absolutely nothing there. Well, nothing aside from the few things Error put there like his strings, puppets, Blueberry Sans... Well, now there's more than one skeleton in the Anti-Void, and we all know how amazing Error turned out. What kind of an impact does the silence and solitude have on Blueberry? The lack of things to feel and see and do might be messing with Blue's mind a little bit. And perhaps it's just Blue's vivid imagination, but something about that glitch is really starting to look appealing to the seemingly-innocent skeleton... WARNING: Contains smut, but there IS a story to this. I don't typically write smut just because I feel like it. If there's smut, there's a reason for it. Based on the AskErrorSans blog by LoverOfPiggies on Tumblr, but kind of canon divergent. The "Toriel story incident" never happened in this timeline, but that doesn't mean Error won't throw a dorky hissy fit sometimes.
Won't You Stay My Little Honeybun? by Krembell
24 parts Complete Mature
You were the assistant to Alphys, her co-worker tinkered on a very curious machine in the same department you worked at, incidentally that co-worker was your chosen soulmate. His name? Sans, Sans the skeleton. You didn't really spend any time with him or rather he was purposefully avoiding you, knowing that he also knew you were soulmates tethered by a soulmate connection. The only reason he allowed you to be around was mostly because of your ability to put things into your memory with excellent accuracy to remember important things like a certain blueprint or a recipe for medicinal use. You had tried multiple times to befriend Sans but everytime he looked quite uncomfortable so you stopped trying to force him into a friendly relationship. One night you had been left alone with the curious machine as you had leftover work to do and one event led to another. You wish you hadn't cut the string.
Under Our Spell by Krembell
38 parts Complete Mature
You, a Witch, owned a potion shop in Ebott city where Monsters, Humans and supernatural beings lived in relative harmony. You had once had a chance encounter with two skeletons Monsters but to your surprise, both of them were supernatural beings! Quite rare for Monsters to be. Even though you had a hectic meeting with the skeleton brothers, the three of you became quick friends. The vampire skeleton Sans helped you around your shop when he could while his brother Papyrus, a werecat, came around to show off his partners...? Yeah you thought it was a weird way for him to bring you extra customers but highly appreciated! Everything changed when one adorable blue skeleton invited you to a yearly masquerade party and something unlocked inside two skeleton's minds when they saw you getting all nice and comfy with another Monster. They couldn't let their beloved witch be taken away now could they?
Reincarnated as Underswap Sans and how about Error get kidnapped instead? by SkeleSheena
22 parts Ongoing Mature
what if someone reincarnated as underswap sans and they kidnap error instead of being kidnapped by error? let's find out hehehe... This is no Blue or Blueberry . Cover belongs to Pokefangirl491 on deviantart
Love me won't cha? by YanBooks_TMV
12 parts Ongoing
𝑬𝒓𝒓𝒐𝒓 π’ˆπ’†π’•π’” 𝒂 π’„π’†π’“π’•π’‚π’Šπ’ 𝒋𝒐𝒃 π’˜π’‰π’Šπ’„π’‰ 𝒔𝒉𝒆 π’•π’‰π’Šπ’π’Œπ’” π’Šπ’” 𝒇𝒖𝒏. 𝑺𝒉𝒆 𝒅𝒐𝒆𝒔𝒏'𝒕 π’ˆπ’†π’• π’Žπ’–π’„π’‰ π’‚π’„π’•π’Šπ’π’ 𝒐𝒖𝒕 𝒐𝒇 π’Šπ’• 𝒃𝒆𝒄𝒂𝒖𝒔𝒆 𝒐𝒇 𝒉𝒆𝒓 π’‡π’“π’Šπ’†π’π’… π’‘π’“π’π’•π’†π’„π’•π’Šπ’π’ˆ 𝒃𝒐𝒕𝒉 𝒉𝒆𝒓 𝒂𝒏𝒅 𝒕𝒉𝒆 𝒓𝒆𝒔𝒕 𝒐𝒇 𝒉𝒆𝒓 π’Šπ’π’π’π’„π’†π’π’„π’†. 𝑢𝒏𝒆 π’π’Šπ’ˆπ’‰π’• 𝒔𝒉𝒆 π’Žπ’‚π’Œπ’†π’” 𝒂 π’˜π’Šπ’”π’‰...𝒂 π’—π’†π’“π’š 𝒃𝒂𝒅 π’˜π’Šπ’”π’‰. π‘΅π’π’˜ 𝒕𝒉𝒆 π’Žπ’–π’π’•π’Šπ’—π’†π’“π’”π’† π’˜π’‚π’π’•π’” 𝑯𝑬𝑹 𝒂𝒏𝒅 π’π’π’π’š 𝑯𝑬𝑹! 𝑾𝒉𝒆𝒏 𝒔𝒉𝒆 π’Šπ’” 𝒇𝒆𝒅 𝒖𝒑 π’˜π’Šπ’•π’‰ π’•π’‰π’Šπ’” 𝒔𝒉𝒆 π’‹π’–π’Žπ’‘π’” π’Šπ’π’•π’ 𝒕𝒉𝒆 π’—π’π’Šπ’… 𝒂𝒏𝒅 𝒆𝒏𝒅𝒔 𝒖𝒑 π’Šπ’ 𝒂 π’Žπ’–π’„π’‰ 𝒔𝒂𝒇𝒆𝒓 π’–π’π’Šπ’—π’†π’“π’”π’† . . . . . . . . 𝑢𝒓 𝒔𝒐 𝒔𝒉𝒆 π’•π’‰π’π’–π’ˆπ’‰π’• . . . . . . . . .
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Slide 1 of 10
The One Thing That They Care About (Sans AU x Reader x Papyrus AU) cover
New Purpose (US!Papyrus x Female!Reader) cover
Blueberry Sans X Chara cover
Underswap love [complete] cover
AU Sans X Reader Long OneShots cover
Look How Far You've Come! cover
Won't You Stay My Little Honeybun? cover
Under Our Spell cover
Reincarnated as Underswap Sans and how about Error get kidnapped instead? cover
Love me won't cha? cover

The One Thing That They Care About (Sans AU x Reader x Papyrus AU)

20 parts Complete

Y/n L/n. A special human with a special SOUL. Yes, her Soul Trait is something new. But other than her SOUL trait she has another secret. One day, while she was at the surface with Frisk and Sans. 6 skeletons appeared out of nowhere, making raging screams and chaos as maniac laughter filled the air in their wake. Soon they found Classic Sans with Y/n & Frisk. But when they saw Y/n, they were curious of how she can wield magic powers and be brave. Soon they took Y/N with them, to their castle. Will Y/n tame them? Or will Y/n fail and suffer the consequences? Involving a Bad Sanses x Reader x Star Sanses plot. Along with various Alternate Sanses. #1 in badsanses at 17/01/2021 #1 in ausanses at 31/01/2021 #2 (Out of 21.8K) in nightmare at 24/02/2021 #38 (Out of 48.1K) in undertale at 21/05/2021 #3 in (Out of 3.42k) Cross at 18/12/2021 #1 in Dust (Out if 2.15k) at 18/12/2021

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