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• Lost in the Bitties by Sorrygiest

  Fandoms: Undertale (Video Game)  

  • Teen And Up Audiences
  • Creator Chose Not To Use Archive Warnings
  • Gen
  • Work in Progress

  10 Dec 2025

  Tags

  • Creator Chose Not To Use Archive Warnings
  • Sans (Undertale)/Reader
  • Sans/Sans (Undertale)
  • Sans (Undertale)
  • Reader
  • Sans Ensemble (Undertale)
  • Gender-Neutral Pronouns
  • Reader Is Not Frisk (Undertale)
  • Reader Is Not Chara (Undertale)
  • Alternate Universe - Bittybones (Undertale)
  • Underswap Sans (Undertale)
  • Underfell Sans (Undertale)
  • Canon Sans | Classic Sans (Undertale)
  • Original Character(s)
  • Fluff and Angst
  • Mild Angst
  • Found Family
  • Platonic Relationships
  • mentions of experimentation
  • Science Experiments
  • Laboratories
  • hints of trauma
  • Hijinks & Shenanigans
  • How Do I Tag
  • Reader-Insert
  • Reader has a toxic friend
  • mentions of abuse
  • Post-Undertale Pacifist Route
  • Horrortale Sans (Undertale)
  • Other Additional Tags to Be Added

  Summary

  You’ve been living your life content but lonely. Until one day you were introduced to a whole new world of bitties! Especially the more newer skeleton variety.

  There’s grumpy ones.

  There’s lazy ones.

  There’s even ones inspired throughout multiple multiverses!

  An adventure of cuteness awaits you in the form of little skeletal creatures. Get ready dear Reader, for it will be a chaotic and fun ride.

  Language:

  English

  Words:

  7,876

  Chapters:

  3/?

  Comments:

  11

  Kudos:

  57

  Bookmarks:

  7

  Hits:

  538