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1. A Teenager’s Guide to Accidentally Becoming a Monster (What do you mean im the end of the World???) by Fyodor_Kinnie

   Fandoms: Undertale (Video Game)  

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

   02 Nov 2025

   Tags

   • Graphic Depictions Of Violence
   • Original Male Character(s)
   • Dreamtale Nightmare Sans (Undertale)
   • Bad Sanses | Nightmare's Gang (Undertale)
   • Star Sanses (Undertale)
   • Dreamtale Sans | Dream (Undertale)
   • _____tale Sans | Ink (Undertale)
   • Protective Dreamtale Nightmare Sans (Undertale)
   • Dreamtale Nightmare Sans Being a Jerk (Undertale)
   • Something New Sans | Killer (Undertale)
   • Dusttale Sans (Undertale)
   • Soul transfer
   • Horrortale Sans (Undertale)
   • Canon Sans | Classic Sans (Undertale)
   • Error Sans (Undertale)
   • Underswap Sans (Undertale)
   • Alternate Universe - Reincarnation
   • Accidental Child Acquisition
   • No Plot/Plotless
   • Accidental scary
   • Author Is Sleep Deprived
   • accidental villain
   • Reapertale Sans (Undertale)
   • Xtale Sans | Cross (Undertale)
   • How Do I Tag
   • Other Additional Tags to Be Added
   • Male Protagonist
   • Nightmare goes by Epiales

   Summary

   A fourteen-year-old dies. Somehow, he wakes up in a gothic castle… in the body of Nightmare Sans. Pale skin, glowing eye, dramatic frills, tendrils that might be alive, and a permanent “I feel miserable” vibe—basically a deluxe, broody skeleton package he definitely didn’t order.

   Now he has to survive bad timelines, chaotic skeletons, and his own very confused soul while looking intimidating and not dying… again. Chaos, brooding, accidental gothic flair, and very little actual self-control ensue

   Series

   • Part 1 of Sans aus for the win! :D

   Language:

   English

   Words:

   2,336

   Chapters:

   1/?

   Comments:

   4

   Kudos:

   22

   Bookmarks:

   1

   Hits:

   258