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1. Public Bookmark *

   Gloom & Doom All Up in Your Room by TrashCollector

   Fandoms: Undertale  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • F/M, Multi
   • Work in Progress

   24 Oct 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • you/Sans
   • Sans (Undertale)/Reader
   • Dust!Sans/Reader
   • Sans(Horrortale)/Reader
   • Reader
   • You
   • Dream!Sans
   • Nightmare!sans
   • Horrortale!Sans
   • Dusttale!Sans
   • Killer!Sans - Character
   • Geno!Sans
   • swap!sans
   • swap!papyrus
   • Cross (Xtale!Sans)
   • Reader-Insert
   • Slow Burn
   • Domestic Fluff
   • Slice of Life
   • But Also!
   • Drama
   • Action
   • AU prejudice
   • maybe not so bad
   • evil sans
   • Reader Just Wants To Help
   • reader is bad at helping
   • Gratuitous Swearing
   • Alternate Universe
   • Alternate Universe - Horrortale (Undertale)
   • Alternate Universe - Dreamtale (Undertale)
   • Home Universe is Undertale
   • more tags as I think of them
   • Monsters on the Surface
   • skeletons keep showing up in your living room
   • you should probably do something about that
   • Sans is a gremlin
   • EVERY Sans is a gremlin
   • no exceptions
   • Bad guys
   • Reverse Harem

   Summary

   It started with one moody skeleton crash-landing in your home. Then he started bringing friends. All of a sudden your apartment is a multidimensional nexus for an awful lot of monsters named 'Sans.' They're all a little rough around the edges, but they're sweet in their owns ways. You probably should have guessed they were the "bad guys" though. Oops?

   Alternate Summary: BadGuysOnly reverse harem

   Series

   • Part 1 of Gloom & Doom Extended Universe

   Language:

   English

   Words:

   104,865

   Chapters:

   59/?

   Collections:

   2

   Comments:

   3,698

   Kudos:

   9,429

   Bookmarks:

   1,578

   Hits:

   293,015

   Bookmarked by SpectralBait

   15 Dec 2024

2. Public Bookmark *

   Core the Apple by Devcipher

   Fandoms: Undertale (Video Game)  

   • Teen And Up Audiences
   • Creator Chose Not To Use Archive Warnings
   • No category
   • Complete Work

   23 Jul 2022

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans & Sans (Undertale)
   • Nightmare & His boys
   • Nightmare/suffering
   • Errormare hints
   • Error Sans/Nightmare Sans
   • Nightmare Gang (Undertale)
   • Nightmare Sans
   • Dream Sans
   • Sans (Undertale)
   • Heavy Angst
   • Self-Harm
   • Sort Of
   • by neglecting needs
   • Suicidal Thoughts
   • Active suicide attempt
   • Family Bonding
   • Pain
   • lots of pain
   • Emotional Hurt/Comfort
   • Regret
   • author is projecting
   • Starvation
   • Neglect
   • Self-Loathing
   • Nightmare low key hates himself
   • Nightmare is tired of fighting and living
   • It's a bad time when Error is the voice of reason
   • dadmare
   • I Had To
   • Dreamtale Nightmare Sans Needs a Hug (Undertale)
   • Protective Error Sans (Undertale)
   • Error is not your therapist
   • I can't believe I have to use that tag again
   • Eating Disorders
   • kind of?
   • Vomiting
   • Purging
   • Past Abuse
   • Implied/Referenced Child Abuse
   • Dissociation
   • Nightmare has PTSD
   • Malusdomesticaphobia
   • Hinted Errormare
   • Because it was apparently inevitable from day 1
   • Brotherly Love
   • Telepathy
   • via souls
   • Dream and Nightmare can communicate through a soul tether
   • Grab a tissue
   • The author is weeping too
   • It Gets Worse Before It Gets Better
   • Error Sans/Dreamtale Nightmare Sans (Undertale)

   Summary

   Nightmare has grown weary of the constant strife between himself and his brother. Every time he manages to fuel the ever-persistent need for negativity in his system, Dream and his friends immediately sap it out of him.

   So, Nightmare has decided he was done. If they believed the multiverse was better without negativity, he was okay with that. He'd well descended past apathy years ago.

   Series

   • Part 1 of Appleverse

   Language:

   English

   Words:

   41,282

   Chapters:

   14/14

   Collections:

   4

   Comments:

   661

   Kudos:

   1,397

   Bookmarks:

   251

   Hits:

   22,721

   Bookmarked by SpectralBait

   04 Dec 2022