Undertale: The Third Sibling
  • Reads 53,660
  • Votes 1,800
  • Parts 105
  • Time 9h 31m
  • Reads 53,660
  • Votes 1,800
  • Parts 105
  • Time 9h 31m
Ongoing, First published Aug 07, 2018
It was just a peaceful day in Snowdin. Everyone was just doing what they normally do in the underground.

The Nicecream guy kept selling, monster kid was playing around, Grillby was cleaning up some spilled ketchup. Even in the Skeleton household, Sans was chillin in his room while Papyrus was working on his spaghetti. 

But not everything is what it seems

Suddenly, a loud thump was heard outside of the brothers house...


~~~~
Hewo!!! This is my first Undertail story ^~^ hope you all enjoy this as much as me writing it!




Highest ratings:

#1 sans
#1 gaster
#1 outer
#2 ink
#5 blueberry
#6 undertale
(CC) Attrib. NonComm. ShareAlike
Table of contents
Sign up to add Undertale: The Third Sibling to your library and receive updates
or
#967frisk
Content Guidelines
You may also like
No Empty Promises [Ink X Error] FINISHED by ReaperK
31 parts Complete Mature
'It's all my fault...' 'Now he's gone...' 'If I would have listened, and believed him....' "I'm sorry," He let out a choked sob. ERROR cried, falling to his knees in his house. The ones he loved most were just taken from him. How could he live with himself? He left for groceries, and when he came back his greatest enemy he thought he killed a few months ago was in his house, holding the ones he loved. On the ground layed the one he loved, dying and becoming dust. "I-Im S-s-So s-s-O-r-RY..!!" He wailed out, dust laying on his lap. Nothing could bring them back, it'd take a miracle to find out how to revive a skeleton after he became dust. And it'd take forever to hunt through EVERY SINGLE AU to find the only ones he loved that were still alive. He LET him take them. But if he went and looked for them, they'd die. He took one deep, shaky breath as he wispered, "I'm sorry...." Then shock took over. Another voice just forgave him. Shakily, he turned around as tears stopped flowing. His eye sockets widened, and he started to sob the most he ever has. "HOW CAN YOU SAY THAT?!" "I LET YOU DIE!" "DON'T FORGIVE ME!!" "I LET HIM TAKE THE TWO AWAY, DAMMIT!!!" -WARNING- Rated R/18+ for Violence, Swearing, and suggestive content. CONTAINS: Deprsssing things, murder and gore, sexual content and more. READ AT YOUR OWN RISK. Cover art does not belong to me, only the storyline and ERROR's kitten. P. S. THANK YOU FOR AAAAAALL THE READS, LIKES, AND FUNNY COMMENTS. IT MEANS A LOT, YO. ~RK
Hungry Love (Horror Sans x Reader ) by YandereEmo
5 parts Ongoing
In the midst of Tokyo's bustling streets, you led a life that appeared ordinary, despite your role as a leader in a prominent gang. Yet, beneath the façade of normalcy, you carried the weight of profound loss-your mother, your father, your brother-all taken from you, leaving behind a void that seemed impossible to fill. Determined to shield yourself from further heartache, you resolved to protect the one remaining person you held dear: Frisk. Their presence brought light into your shadowed existence, offering a glimmer of hope amidst the darkness of your past. But fate had other plans. The dissolution of your gang shattered the fragile stability you had built, leaving you adrift in a world that suddenly seemed hostile and unfamiliar. Yet, in the aftermath of this upheaval, you found solace in Frisk's unwavering companionship, their presence a beacon of comfort in a sea of uncertainty. Then, in a cruel twist of fate, you lost Frisk. Cast into the unfathomable depths of the underground, your path collided with Aliza's, a chance encounter marked by the ominous presence of Horror Sans. Emerging from the shadows, his hollow eye sockets bore into your soul, his grin sending shivers down your spine-a chilling reminder of the darkness that lurked within the depths of the unknown. With each loss, the world seemed to grow colder, more indifferent to your struggles. Yet, amidst the despair and desolation, a glimmer of resilience flickered within you, a quiet determination to reclaim what had been taken from you, no matter the cost.
You may also like
Slide 1 of 10
"𝗟𝗼𝘃𝗮𝗯𝗹𝗲 𝗖𝗼𝗻𝗳𝗶𝗱𝗮𝗻𝘁𝘀"(ErrorInkMare/Error x Ink x Nightmare) cover
No Empty Promises [Ink X Error] FINISHED cover
Lost Cause cover
Hungry Love (Horror Sans x Reader ) cover
Don't Forget [Sans x Female Reader] cover
Stuck Together(Errink) cover
What We Hope For (Sans X Reader) ✨UNDER EDITING✨ cover
Target Settled|Outer!Sans x Killer!Sans cover
Trust   •〖Baby Blaster AU〗*NOT MINE* cover
I'm The Apprentice: Underfell Papyrus X Female Reader cover

"𝗟𝗼𝘃𝗮𝗯𝗹𝗲 𝗖𝗼𝗻𝗳𝗶𝗱𝗮𝗻𝘁𝘀"(ErrorInkMare/Error x Ink x Nightmare)

42 parts Complete Mature

Welp...here it is ꧁•••••꧂ One day...Ink was being reported as a murderer Ink always denying that he didn't killed his two best friends that was Dream and Blue,...or is he actually telling the truth? Well,he was being sent in the Asylum because the others think that he was now being crazy Error and Nightmare was figuring out the truth themselves instead of believing the one who witnessed Ink killing his two bestfriends '3 𝒅𝒂𝒚𝒔 𝒍𝒆𝒇𝒕 𝒃𝒆𝒇𝒐𝒓𝒆 𝑰𝒏𝒌 𝒘𝒊𝒍𝒍 𝒃𝒆 𝒆𝒙𝒆𝒄𝒖𝒕𝒆𝒅...' Also...which one Ink would chose to be with him forever? Is it Error or Nightmare? Maybe both? Let's find out! Story Contains: Swearing/Cursing words Angst Other mature content ♡︎♡︎♡︎♡︎♡︎ Cover by me |Date Started:10/20/21| |Date Ended:12/13/21|