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1. Public Bookmark 97

   heal me by charamelwrites

   Fandoms: Undertale (Video Game)  

   • Teen And Up Audiences
   • No Archive Warnings Apply
   • Multi, F/M, M/M
   • Work in Progress

   16 Jul 2026

   Tags

   • No Archive Warnings Apply
   • Sans (Undertale)/Reader
   • horror!sans/reader
   • Dust!Sans/Reader
   • Killer!Sans/Reader
   • Nightmare!Sans/Reader
   • Bad Sanses/ Reader
   • horror!sans
   • Dust!Sans - Character
   • Killer!Sans - Character
   • Nightmare!sans
   • Ink!Sans
   • Dream!Sans
   • swap!sans
   • Error!Sans
   • outertale sans
   • Cross!Sans
   • horror!papyrus
   • Farmtale Sans
   • Farmtale Papyrus - Character
   • Reader-Insert
   • Reader Is Not Frisk (Undertale)
   • Hurt/Comfort
   • Domestic Fluff
   • Slice of Life
   • Alternate Universe - Undertale Multiverse | UTMV (Undertale)
   • Bad Sanses | Nightmare's Gang (Undertale)
   • Bad Flirting
   • Developing Relationship
   • reader is a kindness soul
   • Kidnapping
   • Reverse Harem
   • Underswap Sans (Undertale)
   • Alternate Universe - Dreamtale (Undertale)
   • Something New Sans | Killer (Undertale)
   • Dusttale Sans (Undertale)
   • Horrortale Sans (Undertale)
   • Alternate Universe - Inktale (Undertale)
   • Angst and Feels
   • They/Them Pronouns for Reader-Insert
   • Alternate Universe - Outertale (Undertale)
   • Alternate Universe - Underfell (Undertale)
   • Xtale Sans | Cross (Undertale)
   • Kissing skeletons!
   • Sleepy Cuddles
   • Eventual Romance
   • they travel to alternate universes
   • Alternate Universe - Farmtale (Undertale)

   Summary

   You were kidnapped by the Bad Sanses gang because you apparently "stole" Horror's axe. All hell breaks loose.

   arc 1 (1-15): encounter
   arc 2 (16-29): after
   arc 3 (30-?): knit

   Language:

   English

   Words:

   87,116

   Chapters:

   29/?

   Comments:

   282

   Kudos:

   396

   Bookmarks:

   97

   Hits:

   10,588

   Bookmarked by Ellajadegomez

   15 Jul 2026

2. Public Bookmark 7

   my heart. (HT!Sans/Reader) by Calibri_1201

   Fandoms: Undertale (Video Game), Horrortale - Fandom  

   • Teen And Up Audiences
   • Creator Chose Not To Use Archive Warnings, Graphic Depictions Of Violence
   • Other
   • Work in Progress

   12 Jul 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Graphic Depictions Of Violence
   • Sans (Undertale)/Reader
   • Sans (Horrortale)/Reader
   • Briefly Reader/Oc but that doesn't last long
   • Sans (Undertale)
   • Sans (Horrortale)
   • Alphys (Undertale)
   • Alphys (Horrortale)
   • Papyrus (Undertale)
   • Papyrus (horrortale)
   • Undyne (Undertale)
   • Undyne (horrortale)
   • Toriel (Undertale)
   • Mentioned Toriel (Undertale)
   • Horrortale Sans (Undertale)
   • Alternate Universe - Horrortale (Undertale)
   • Horrortale Papyrus (Undertale)
   • Horrortale Sans (Undertale)/Reader
   • HorrorTale Toriel (Undertale)
   • Horrortale Undyne (Undertale)
   • Horrortale Alphys
   • There's a Reader boyfriend for a bit but he sucks and is going to die anyway dont worry
   • Minor Character Death
   • Yeah i kind of made Sans a yandere sorry man
   • Sans is called Mars
   • Papyrus is called Jupiter
   • Reader is called Protag
   • College AU
   • im making protag take stem classes cause i take stem and dont know how to write about anything else ok sue me
   • the tags will prolly change cause i dont know how into the background of horrortale ill go
   • so there might not actually be that much violence but the tag is there for now just in case
   • No Use of Y/N for Reader-Insert
   • no beta reader we die like asgore
   • but ill try to keep the descriptions mostly vague in case you dont want to think about stem
   • because neither do I
   • but the physics one is kind of plot relevant cause i want to go into pre-canon undertale for sans/mars' science background
   • everyone here is an adult unless specified otherwise
   • i also gave protag a cat cause i want a cat
   • i dont want to make mars too weird because then it gets all cringey
   • i dont want to write that so he's not gonna be the biggest yandere on the planet
   • he just has attachment issues
   • poor guy
   • slow to medium burn
   • medium burn i think i dont know
   • its gonna be at least 8 chapters before romance happens is that medium
   • maybe seven
   • can you tell how good i am at planning
   • none of these tags are useful my bad

   Summary

   A Yandere Horrortale Sans x Reader fanfiction. (College AU.)
   ---
   After monsters rise from the mountain with the help of a worryingly skinny little girl, they adapt and enter society with relative ease. Obviously there are racist bigots, but for the most part, they are welcomed.
   Legal issues get sorted, and monsters are officially allowed the same rights to an education as humans. Mars and Jupiter join with their respective courses set out, and both encounter a peculiar human. Jupiter sees a new friend, and Mars sees an angel. After living in a lawless land for so long, Mars' sense of normal is just skewed enough to let him think what he is doing is fair. It's for his datemate after all. He switches his course to yours, and with the encouragement of his brother, gets rid of his obstacles and competition in (mostly) non-violent ways.

   You are his heart.
   ---
   Sans is named Mars
   Papyrus is named Jupiter
   Reader is named Protag.

   --
   i absolutely cannot promise regular updates.

   Language:

   English

   Words:

   51,450

   Chapters:

   8/?

   Comments:

   18

   Kudos:

   59

   Bookmarks:

   7

   Hits:

   1,051

   Bookmarked by Ellajadegomez

   12 Jul 2026