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1. Public Bookmark 13

   Behind by Hellsaint7w7

   Fandoms: Undertale (Video Game)  

   • Teen And Up Audiences
   • Major Character Death
   • M/M
   • Work in Progress

   30 Oct 2024

   Tags

   • Major Character Death
   • Cross/Dream
   • Cross Sans/Dream Sans
   • Nightmare/Ccino
   • Nightmare Sans/Ccino Sans - Relationship
   • Dust Sans
   • Dust (Undertale)
   • Killer Sans - Character
   • Killer (Undertale)
   • Dreamtale Nightmare Sans (Undertale)
   • Bad Sanses | Nightmare's Gang (Undertale)
   • Killer Sans (Undertale)
   • Dusttale Sans (Undertale)
   • Fluffytale Sans | Ccino (Undertale)
   • Dreamtale Sans | Dream (Undertale)
   • Xtale Sans | Cross (Undertale)
   • Dreamtale Sans | Dream/XTale Sans | Cross (Undertale)
   • Suicide
   • Self-Harm
   • Killer Sans Needs a Hug - Freeform
   • Authors doesn’t know how to cook
   • you’ll understand in chapter two
   • Cross and Dream are very wholesome together

   Summary

   Dream and Nightmare make a truce and peace starts in the Multiverse. Everyone starts living again, even Nightmare.

   Everyone but Killer.

   Killer feels like there is nothing left for him now.

   Language:

   English

   Words:

   12,174

   Chapters:

   3/4

   Comments:

   16

   Kudos:

   96

   Bookmarks:

   13

   Hits:

   1,355

   Bookmarked by Zeather

   15 Jul 2026

2. Public Bookmark *

   Sans AUs React by 1Edge_Lord1

   Fandoms: Undertale (Video Game), AUs - Fandom  

   • Teen And Up Audiences
   • Graphic Depictions Of Violence
   • M/M, Multi
   • Complete Work

   21 Feb 2023

   Tags

   • Graphic Depictions Of Violence
   • Red/Sans
   • Error/Ink
   • Nightmare/Cross
   • Killer/Horror/Dust - Relationship
   • Reaper/Geno
   • Sans (Undertale)
   • Error Sans
   • Ink Sans
   • Cross sans
   • Killer Sans - Character
   • Dust Sans
   • horror sans
   • Fell Sans
   • Nightmare Sans
   • Reaper Sans
   • Geno sans
   • Fresh Sans
   • swap sans
   • Dream Sans
   • Error Sans Needs a Hug (Undertale)
   • Forced God of Destruction Error Sans (Undertale)
   • Sans Angst (Undertale)
   • Murderer Chara (Undertale)
   • Panic Attacks
   • XTale Sans | Cross Needs a Hug (Undertale)
   • Dust Needs a Hug (Undertale)
   • Protective Dreamtale Nightmare Sans (Undertale)
   • Sad Dreamtale Nightmare Sans (Undertale)
   • Uncorrupted Dreamtale Nightmare Sans (Undertale)
   • Caring Dreamtale Nightmare Sans (Undertale)
   • Dreamtale Nightmare Sans Needs a Hug (Undertale)
   • Underfell Sans Needs a Hug (Undertale)
   • Killer Sans Needs a Hug (Undertale)
   • Horror Sans Needs a Hug (Undertale)
   • Suicidal Thoughts
   • Suicide Attempt
   • Murder

   Summary

   The Sans AUs are teleported to a room to watch each of the 'bad guys' backstories. This is after they have made up. (Will mainly focus on Cross and Error as they are my favs!) [Geno, Fresh, Error are siblings and Reaper, Ink, Cross are siblings]

   Language:

   English

   Words:

   11,628

   Chapters:

   8/8

   Comments:

   137

   Kudos:

   666

   Bookmarks:

   114

   Hits:

   15,066

   Bookmarked by Zeather

   15 Jul 2026

3. Public Bookmark 10

   Everything is a lot by Willywoodibiboo

   Fandoms: Undertale (Video Game)  

   • Mature
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Work in Progress

   15 Nov 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans/Sans (Undertale)
   • Ink/Error
   • Killer/Color
   • Killer/Dust
   • Sans (Undertale)
   • _____tale Sans | Ink (Undertale)
   • Error Sans (Undertale)
   • Something New Sans | Killer (Undertale)
   • Dreamtale Nightmare Sans (Undertale)
   • Dreamtale Sans | Dream (Undertale)
   • Xtale Sans | Cross (Undertale)
   • Dusttale Sans (Undertale)
   • Horrortale Sans (Undertale)
   • Othertale Sans | Color (Undertale)
   • Dreamtale Nightmare Sans Being a Jerk (Undertale)
   • _____tale Sans | Ink Being a Jerk (Undertale)
   • Past Relationship(s)
   • Past Abuse
   • Error Sans Needs a Hug (Undertale)
   • Something New Sans | Killer Needs A Hug (Undertale)
   • English Is Not the Author's First Language
   • Suicide Attempt
   • Self-Harm
   • Suicidal Thoughts
   • Dusttale Papyrus (Undertale)
   • Fluff and Angst
   • Fluff
   • Misunderstandings
   • chapter drawings
   • sometimes
   • Angst
   • Whump
   • no beta we die like every monster in the genocide route
   • Depression
   • phanthom papyrus making an appearance to be his usual shitty self

   Summary

   Killer fucked up, and oh boy, Nightmare is PISSED. Killer will have to deal with Nightmare's punishment and keep going forward despite losing all hope.
   -or-
   Nightmare sends Killer to the Anti-Void, house of the crazy destroyer of universes, as a punishment, and Killer has to survive and, most importantly, get out of there as soon as possible... or not.

   Language:

   English

   Words:

   23,901

   Chapters:

   12/?

   Comments:

   19

   Kudos:

   98

   Bookmarks:

   10

   Hits:

   1,694

   Bookmarked by Zeather

   15 Jul 2026

4. Public Bookmark 14

   Sweet Catabasis by Makis_Stories

   Fandoms: Undertale (Video Game)  

   • General Audiences
   • No Archive Warnings Apply
   • Gen
   • Complete Work

   14 Jun 2026

   Tags

   • No Archive Warnings Apply
   • Reaper & Nightmare
   • Reaper/Geno
   • Reaper Sans
   • Nightmare Sans
   • Goth (Undertale - Nekophy)
   • Geno sans
   • Dreamtale Nightmare Sans (Undertale)
   • Child Dreamtale Nightmare Sans (Undertale)
   • Reapertale Sans (Undertale)
   • Aftertale Geno Sans (Undertale)
   • Aftertale Geno Sans/Reapertale Sans (Undertale)
   • Goth - Freeform
   • Reaper being the best dad
   • Geno is a mama bear
   • Adoption
   • Implied/Referenced Child Abuse
   • Blood and Violence
   • mentioned - Freeform
   • Background Character Death
   • big brother Goth
   • Nightmare is a traumatized bean
   • He gets love
   • Hurt/Comfort
   • Fluff and Angst
   • Fluff

   Summary

   Days at work were all the same for Reaper: go to a given place, reap the souls, and leave. It wasn't supposed to go a different way, he wasn't supposed to meet a child in the middle of a dead universe, and he definitely wasn't supposed to take him home with him.

   But what else could he do ? This kid needed him, he couldn't leave him behind.

   Series

   • Part 2 of Nightmare getting adopted

   Language:

   English

   Words:

   5,156

   Chapters:

   1/1

   Comments:

   12

   Kudos:

   70

   Bookmarks:

   14

   Hits:

   362

   Bookmarked by Zeather

   13 Jul 2026

5. Public Bookmark 4

   After The Sun Rises by RainbowFlower01

   Fandoms: Undertale (Video Game)  

   • Teen And Up Audiences
   • Creator Chose Not To Use Archive Warnings
   • F/M, M/M
   • Work in Progress

   07 Jul 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans/Sans (Undertale)
   • AfterDeath - Relationship
   • Reaper/Geno
   • Geno/Reaper
   • soriel - Relationship
   • Sans/Toriel (Undertale)
   • Sans (Undertale)
   • Geno sans
   • Reaper Sans
   • Alphys (Undertale)
   • Toriel (Undertale)
   • Undyne (Undertale)
   • Frisk (Undertale)
   • Chara (Undertale)
   • Flowey (Undertale)
   • Aftertale Geno Sans/Reapertale Sans (Undertale)
   • Aftertale Geno Sans (Undertale)
   • Aftertale Classic Sans (Undertale)
   • Aftertale good ending
   • Fluff and Angst
   • Hurt/Comfort
   • Suicidal Thoughts

   Summary

   This story takes place after the good ending of Aftertale. It focuses on what if Geno was going down the path of becoming Error. Would anyone notice? Would anyone try to stop him? Well, Reaper definitely noticed after discovering that Geno vanished from all his records. He makes an effort to come into Geno's life to warn him. Will this prove to create a bond between the two... or maybe something more? Guess we'll find out! :D

   Language:

   English

   Words:

   1,414

   Chapters:

   1/?

   Kudos:

   11

   Bookmarks:

   4

   Hits:

   54

   Bookmarked by Zeather

   13 Jul 2026