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1. Blood n' Bones by RatFemur

   Fandoms: Undertale (Video Game)  

   • Mature
   • Graphic Depictions Of Violence
   • F/M
   • Work in Progress

   10 Oct 2025

   Tags

   • Graphic Depictions Of Violence
   • Sans (Underfell)/Reader
   • Sans (Underfell)
   • Papyrus (Underfell)
   • Muffet (Underfell)
   • MK (UnderFell)
   • Undyne (Underfell)
   • Alphys (Underfell)
   • Burgerpants (Underfell)
   • vampire reader
   • Tall Reader
   • Slow Burn
   • Hate to Love
   • Enemies to Friends to Lovers
   • No Ecto-Penis (Undertale)
   • Mild Hurt/Comfort
   • Everyone swears
   • underfell monsters are very tsundere
   • forced friendship
   • vampire OCs
   • reader kinda has a name but not really
   • reader is female
   • Reader Is Not Frisk (Undertale)
   • Reader Is Not Chara (Undertale)
   • Eventual Smut
   • Mating Cycles/In Heat
   • reader has similar abilities to Marceline
   • like floating
   • not flying
   • turning into a bat
   • turning into big ol monster bat
   • Blood and Gore
   • Reader is hard to kill and she shows off sometimes
   • no beta we die like men
   • Gore
   • Dissection
   • Torture
   • Hurt/Comfort
   • Dismemberment
   • light dismemberment

   Summary

   Monsters have appeared from a mountain, in your town! Interested in this new development you head home with high hopes. Sadly it seems humans will be humans, and for some reason you keep getting caught in the cross fire. Luckily you've made some new friends to help you out along the way!

   You were just about to head into the nearby town when your phone went off, it was a text. From Otto of all people. A video of him, and what looked like monsters walking behind him. "You should come home (Y/n), things just got interesting."

   Reader is female (sorry) there will be smut at some point, don't know when though...

   Series

   • Part 1 of Blood N Bones Stuff

   Language:

   English

   Words:

   67,195

   Chapters:

   31/?

   Comments:

   217

   Kudos:

   301

   Bookmarks:

   55

   Hits:

   8,185