AU Sans Oneshots
- Reads 169,407
- Votes 2,781
- Parts 41
MatureOngoing7h 45m
Last published Wed, Oct 22, 2025
Just a heads up not the greatest at creating stories. Anyway you'll be a different reader each time but with a different Sans. I won't upload much but I'll try to upload as much as I can. Warning: there will be smut, kissing, maybe some sexual content, swearing, anything traumatic like abuse, and you being a hybrid reader like a Neko. Also none of the art is mine, all credit of art goes to the artists. So try and enjoy my terrible writing. 😄
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I want Her (Underswap!Sans x Shy!Reader)
Yandere!Underswap!Sans x Shy!Reader And some Papyrus x reader -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- He was so sweet, so innocent. All he loved doing was cooking tacos, listen to his brothers puns, and try to be friends with everyone. Then you're pushed down a hole and end up in this strange new underground. After seeing you, his sanity breaks. Instead of making tacos, he loves hearing bones pop. Instead of listening to his brothers jokes, he bathes in blood. Instead of making friends with everyone, he kills them. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- "You can't escape. Not now. Not ever." -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Sequel to ending D: Silently Sleeping (Underswap!Papyrus x reader) Sequel 2: A New Life A/N edit: Apparently, I like this word cute. Oh, and, under a bunch of editing. A/N edit two: OH YEAH, and very cliche! XDComplete
Home (bad sanses x child reader)
You were an average kid, somewhat having a older mind than most of your classmates. you had always been into the undertale fandom, and even knew almost everything about the aus and soul colors. while what seemed like a normal day at school quickly turned around after a huge bang struck the class room next door. in this story y/n is nonbinary and 12-16 years old. But more interpreted as 14 I post a new chapter every 3 day and 5 days at the maximum. WARNING: this story will mention some forms of slight emotional harm. And Sexual abuse. Readers be safe. Please if you are in any danger, contact someone. You are not alone. With that aside enjoy the story . This story is finished as of September 1 2022, I encourage you to read my other story "Our Disturbing Love" And in the next month or couple weeks I plan on creating another bad sanses x reader.Complete
liaison 🩹
𝐍𝐢𝐠𝐡𝐭𝐦𝐚𝐫𝐞 𝐡𝐚𝐬 𝐠𝐫𝐨𝐰𝐧 𝐢𝐧𝐬𝐚𝐧𝐞. 𝐇𝐞 𝐧𝐨 𝐥𝐨𝐧𝐠𝐞𝐫 𝐞𝐱𝐢𝐬𝐭𝐬. 𝐈𝐭 𝐜𝐚𝐮𝐬𝐞𝐬 𝐦𝐚𝐧𝐲 𝐭𝐨 𝐟𝐞𝐞𝐥 𝐞𝐦𝐩𝐭𝐲 𝐚𝐧𝐝 𝐥𝐢𝐭𝐭𝐥𝐞 𝐦𝐨𝐧𝐬𝐭𝐞𝐫𝐬 𝐚𝐫𝐨𝐮𝐧𝐝 𝐭𝐡𝐞 𝐦𝐮𝐥𝐭𝐢𝐯𝐞𝐫𝐬𝐞. 𝐈𝐭 𝐢𝐬 𝐝𝐫𝐞𝐚𝐦𝐬 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲 𝐭𝐨 𝐭𝐚𝐤𝐞 𝐜𝐚𝐫𝐞 𝐨𝐟 𝐭𝐡𝐞𝐦. 𝐈𝐧 𝐭𝐡𝐞 𝐩𝐫𝐨𝐜𝐞𝐬𝐬 𝐭𝐡𝐨𝐮𝐠𝐡, 𝐂𝐫𝐨𝐬𝐬 𝐛𝐞𝐜𝐨𝐦𝐞𝐬 𝐜𝐨𝐧𝐜𝐞𝐫𝐧𝐞𝐝 𝐚𝐧𝐝 𝐰𝐨𝐫𝐤𝐬 𝐚𝐥𝐨𝐧𝐠 𝐬𝐢𝐝𝐞 𝐝𝐫𝐞𝐚𝐦. 𝐇𝐞 𝐬𝐭𝐚𝐫𝐭𝐬 𝐭𝐨 𝐠𝐫𝐨𝐰 𝐟𝐞𝐞𝐥𝐢𝐧𝐠𝐬 𝐟𝐨𝐫 𝐝𝐫𝐞𝐚𝐦 𝐭𝐚𝐤𝐢𝐧𝐠 𝐡𝐢𝐦 𝐚 𝐰𝐡𝐢𝐥𝐞 𝐭𝐨 𝐜𝐨𝐧𝐟𝐞𝐬𝐬.. 𝐀𝐥𝐨𝐧𝐠 𝐬𝐢𝐝𝐞 𝐨𝐭𝐡𝐞𝐫 𝐜𝐨𝐮𝐧𝐭𝐞𝐫𝐩𝐚𝐫𝐭𝐬 𝐭𝐡𝐞 𝐬𝐭𝐨𝐫𝐲 𝐛𝐞𝐠𝐢𝐧𝐬 𝐭𝐨 𝐠𝐞𝐭 𝐛𝐞𝐭𝐭𝐞𝐫, 𝐛𝐮𝐭 𝐚𝐥𝐬𝐨 𝐚 𝐥𝐨𝐭 𝐰𝐨𝐫𝐬𝐞. ✦ THIS STORY HAS TRIGGERING TOPICS SUCH AS DEPRESSION AND SUICIDAL THOUGHTS !! IF YOUR SENSITIVE TO THOSE TOPICS I SUGGEST NOT READING !! ✦ART IS MINEComplete
The One Thing That They Care About (Sans AU x Reader x Papyrus AU)
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 18/12/2021Complete
I'm a Sans ( au sans x reader x au papyrus )
This isn't a typical sans x reader(now papyrus x reader too). It's got more than that, well at least a different plot device first chapters will be about, just you(but it'll be good, I think so)and it's about you dear reader, you are now reborn as a Sans of a different au, but you don't have time to marvel how you're been reborn as your favorite character, because if you want to live you better focus because unlike frisk you're not coming back a second time when you die. (Short, and I mean short chapter, but this will ensure I can post more -w-) (Edit: this is context of your previous life is that you are originally female, aged 15, you had died during a car accident, you were sleeping in the back of the car, while you had a road trip to visit your family in Canada. The car had driven off the road because of black ice your father did not see in the dark of night. You heard the sound of your fathers scream then lead by your mothers then little brother's scream. You banged your head in the chair in front of you making you pass out, and when you open your eyes you had found yourself be popped out, but you didn't know that at the time. Art always be done by me. Edit: discontinuedComplete
Capture & befriend (one-shot sanscent)
Mostly about Moonsky sans by https://x.com/moonsans123 and the bad sanses, and ships so :/ This story will contain alcohol, smoking, drug use, swaring, abuse, misspelled grammar and, violence, very detailed descriptions, kidnapping, LBTQR, Lemon, lime, fluff, angst, masking autism, panic attacks, mental illnesses, self-harm, PTSD, experimentation, and very uncafterble topics, TW Rape, and thoughts of suicide, and ships you may feel uncafterble with. If you are uncomfortable with this, then I would recommend not continuing with this book. If you want to leave a request, you can. I will try my best to write as much as possible, and my stories will most likely be split into two parts.
Yandere!Underswap!Sans x Shy!Reader And some Papyrus x reader -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- He was so sweet, so innocent. All he loved doing was cooking tacos, listen to his brothers puns, and try to be friends with everyone. Then you're pushed down a hole and end up in this strange new underground. After seeing you, his sanity breaks. Instead of making tacos, he loves hearing bones pop. Instead of listening to his brothers jokes, he bathes in blood. Instead of making friends with everyone, he kills them. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- "You can't escape. Not now. Not ever." -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Sequel to ending D: Silently Sleeping (Underswap!Papyrus x reader) Sequel 2: A New Life A/N edit: Apparently, I like this word cute. Oh, and, under a bunch of editing. A/N edit two: OH YEAH, and very cliche! XD
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