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1. Causality by samlysam

   Fandoms: Undertale (Video Game)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • Gen
   • Complete Work

   11 Apr 2023

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans & Undyne (Undertale)
   • Sans & Sans (Undertale)
   • Sans (Undertale)
   • Underfell Sans (Undertale)
   • Underfell Undyne (Undertale)
   • Aspirefell
   • parental Red | Underfell Sans
   • Child Sans (Undertale)
   • Alternate Universe of an Alternate Universe
   • Judge Sans (Undertale)
   • Both of them
   • Protective Red
   • Angst
   • Undyne is doing her best
   • things get complicated
   • Multiverse Theory
   • Undyne is not a scientist
   • if you look carefully you'll see actual lore isn't that neat
   • Promises
   • Underfell Grillby (Undertale)
   • I almost forgot Grillby

   Summary

   Grillby has been around long enough to recognize ancient magic that's been hidden from the eyes of civilization for centuries.

   He didn't expect to recognize it in yet another child.

   His worry is now Undyne's problem.

   Series

   • Part 12 of Aspirefell

   Language:

   English

   Words:

   4,583

   Chapters:

   1/1

   Comments:

   6

   Kudos:

   185

   Bookmarks:

   9

   Hits:

   1,543