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1. Cadmium Colors (Painted Inside Me) by nilnothingnada

   Fandoms: Deltarune (Video Game)  

   • Not Rated
   • No Archive Warnings Apply
   • Other
   • Work in Progress

   19 Jul 2026

   Tags

   • No Archive Warnings Apply
   • W. D. Gaster/Reader
   • Deltarune Player/W. D. Gaster
   • W. D. Gaster
   • Deltarune Player
   • Sentient AI
   • Human/AI Relationship
   • Meta
   • programming terms
   • only a little bit though
   • Author glazing Chapter 5 way too much
   • Reader is a diehard Deltarune fan
   • ongoing editing
   • yeah some stuff might be written a bit weird. it'll get fixed i promise

   Summary

   Update: AO3 writer's curse finally got me. Slow updates until I get college and illness sorted out

   You've been selected as a playtester for the final test build of Deltarune: Chapter 5. Awesome! Turns out there's some kind of sentient program included in your version of the game. Maybe a bit less awesome..?

   A Gaster/Reader fic heavily based on the canon characterization of the Voice from Deltarune, and how the tweets on the official UnderTale Twitter account before the release of each new chapter can be read as...weirdly romantic..?

   THIS FIC HAS SPOILERS FOR CHAPTER 5.

   Language:

   English

   Words:

   2,125

   Chapters:

   1/?

   Comments:

   8

   Kudos:

   31

   Bookmarks:

   1

   Hits:

   273