Undertale Puffs

Series Metadata

Listing Series

• Small World by GravidAce

  Fandoms: Undertale (Video Game)  

  • Not Rated
  • Graphic Depictions Of Violence
  • F/F, F/M, M/M, Multi
  • Work in Progress

  17 Jul 2026

  Tags

  • Graphic Depictions Of Violence
  • Sans/Sans (Undertale)
  • Papyrus/Papyrus (Undertale)
  • Sans (Undertale)/Original Character(s)
  • bittybones ocs
  • Original Characters
  • Alternate Universe - Bittybones (Undertale)
  • Pregnancy
  • Inflation
  • Belly Expansion
  • Size Difference
  • Breeding
  • Birth
  • egglaying
  • Eggs
  • Shapeshifting
  • does it count as porn with plot if there's not really sex going on
  • soul eating
  • sapient and nonsapient bitties

  Summary

  A bittybones breeding facility that specializes in parthenogenesis. It takes bitties otherwise lined up for being put down, and receives one of the rarer kinds... it's a nightmare

  the focus in here is on big bellies. do not expect real classical sex from this. they do not have genitalia.

  Series

  • Part 1 of Undertale Puffs

  Language:

  English

  Words:

  26,875

  Chapters:

  15/?

  Comments:

  16

  Kudos:

  39

  Bookmarks:

  4

  Hits:

  905