Undertale Fanfic Ideas
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Contenido adultoContinúa13m
Última publicación jue, jul 24, 2025
A Bunch of ideas, if you wan to use them just give me a warning, I would love to read what someone does with them!!! <3
(Cover art not mine, I was unable to find the creator, if you know please tell me so I can give the credit)
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Sanscest One-Shots (old)
This is a bunch of Undertale one-shots. And a bunch of Undertale and Undertale AU ships. Most of these ideas I wanted for books but, don't have enough time nor ideas. The cover isn't mine. Also, all of the characters aren't mine. I'm just giving them the credit even if I don't know all of the creators of the characters.Concluida
AU Sans Oneshots
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. 😄
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: discontinuedConcluida
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 MINEConcluida
AU Sans X Reader Long OneShots
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.Concluida
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.Concluida
Sanscest Oneshots Fluff & Smut
Most of these will be fairly short and a lot of these will be fluff because I'm new to writing smut and it makes me nervous. If you have any requests please share!
It's a little thing of written stuff about Undertale and it's aus. Some for a day might be short and others might be longer. It'll have angst and fluff or just complete chaos. It'll also switch from human to skeleton, just a heads up there. Also the prompts are made up by me so..yeah. Anyway, hope y'all enjoy this!
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