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The Shadow in the Knight’s Hand by Metal_Overlord93
Fandoms: Undertale (Video Game), Deltarune (Video Game)
07 Sep 2025
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Summary
In the quiet town of Hometown, everything seems peaceful… or so it appears.
Kris Dreemurr, a lonely teenager haunted by a past tragedy, struggles to find their place. With their brother, Asriel away at college and their best friend Noelle growing distant, Kris feels more isolated than ever. But along the way, they form new friendships, and slowly begin to reconnect with Noelle.
Meanwhile, whispers spread of a mysterious figure appearing around town, a cat-like shape with haunting pink and yellow eyes. Some say it appeared after the disappearance of December “Dess” Holiday.
Now, with strange “Dark Fountains” opening across the land, Kris and their friends must uncover the truth behind Dess’s vanishing and confront the darkness threatening to consume their world.
Series
- Part 1 of UT/DR stuff
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Summary
You are a shapeshifter with the rare ability to turn into an orange fox—a secret you’ve kept hidden, knowing humanity once hunted your kind. Living near Ebott, you slip into the night to run free, though the fear of discovery always lingers. Meanwhile, Sans and Papyrus have unknowingly welcomed a manipulative woman named Kora into their lives.
Behind her sweet facade, Kora is a gold digger using the brothers for wealth, status, and comfort, willing to lie, fake affection, or even blackmail them if needed.Eventually Kora stumbles across your apartments terrible condition, deciding to become “friends” with you and inviting you to stay in the mansion with her and her apparent mates. It started off fine, until she began to spread lies— rumors.. Even blaming you for mistakes, stealing. And god who knows what else.
Maybe you can help these skeletons see past whatever game she’s playing at? (Anti-Harem, That’ll switch into a actual harem..)
As well as machine chaos.
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Someone Really Cares About You. by Meowzerz_Oh_6
Fandoms: Undertale (Video Game), Deltarune (Video Game)
06 Sep 2025
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Summary
Sans Undertale struggles to adapt and move on while integrating on the surface.
The troubles of his past haunt him, the burden of his old home, coming from a different world, being aware of resets, the trauma is all messing with his head.
He’s already fallen into depression and other darker thoughts.
Will he succumb into hopelessness, or will he realize that people care about him in time?
OR
What if Sans Undertale is actually from Deltarune? What will a man with such knowledge and burdens do? Will he stay determined? Or will he succumb into the despair that the universe threw one thing after another at him, as he tries to move on in a permanent happy ending.
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Summary
When Sans finds himself unwillingly involved with the work of his father, the next human soul comes into play… how is he going to get out of this with him and his brother safe?
- Language:
- English
- Words:
- 312
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 15
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Little Nighttales I by MilkIsASauce
Fandoms: Little Nightmares (Video Games), Undertale (Video Game)
28 Aug 2025
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Summary
Sans finds himself on a massive ship after a previous..."adventure." The monsters inside want his life, but he just wants to go back. He just wants to survive and go back to the Underground.
Or
A Little Nightmares and Undertale crossover where Sans takes the role of Six
Series
- Part 2 of Little Nighttales
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Summary
The way of a Glutton is a non-canon Reader insert story that takes place in the story of Red Mass, a self AU of Undertale.
You are getting a new job in the City of Paradise, the City of which Sans (Dee) and Frisk built.
Although you want to work in the city laboratory and also fulfill your dream of studying magic, you also get to know more monsters that you have ever seen in your life. And maybe your dorky skeleton boss asks you out on a date?
This story will contain lots of drama, blood and tears.
So be excited for it!
Series
- Part 1 of The Way of a Glutton
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Summary
Papyrus knew something was wrong with his brother—people didn't drop their HP Cap for good reasons, after all. But last he'd checked it was much higher than ONE. With terror in his marrow and his brother staying stubbornly silent about whatever was going on, Papyrus decided it was time to call in the cavalry, because he would be damned if he stood back and watched his brother Fall Down and Dust without doing anything.
OR
Papyrus realizes that being on the Surface hasn't helped his brother's crippling depression, because his HP is still 1. So he decides to bring the others in on his brother's stats to try to help.
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Everyone is invited to Toriel's house to celebrate the anniversary of her and Asgore's divorce! They've even been welcomed to stay the night for a sleepover.
Sans is glad that his friends are here. There is something important that he needs to tell them.
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Spending Spring Break Underground by 4Trixs_Animations3
Fandoms: Undertale (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
25 Aug 2025
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Summary
Once upon a time many centuries ago, the world was ruled by two species: Humans and Monsters. Both of these creatures thrived together using their special talents to help one another. That was until the humans declared war on the monsters out of the blue. This led to the monsters to be banished beneath a mountain.
But rest well when I say the humans suffered their karma. Without monsters they soon lost their magic, along with their way of life. They developed their own powers called quirks, with this power came the raise of heroes and villains. Quirks were quick to spread until only 20% lacked them.
It wasn’t long before magic and monsters were reduced to legend. This led many to climb the mountain to see if the legends were true, only to never return. This was because of the heartbroken monster king who put a bounty on every human who fell.
When the last human fell, the monsters were ecstatic. Finally they’ll be free to wander the surface and feel the sun and the rain again! But unbeknownst to them, they have become even more trapped than they had before. With each reset the monsters were forced to live the same day over and over without anyone knowing ... .Well, almost everyone.
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Summary
Long ago, two races ruled over Earth: Humans and Monsters. Religion and fear of differences troubled the fragile peace on which both species were living so far. A war for faith and honor soon engaged between them. Long. Endless.
Sans and Papyrus, two young skeletons brothers, sons of the Royal Scientist, lost everything in the rage of the fighting: their home, their family, their childhood. During a human attack, they suddenly found themselves delivered to bullets and bombs, all alone.
Both of them started a journey in the devastated landscapes of the end of the war to join Mont Ebott, where Monsters are preparing for a last battle. But could two kids survive by themselves in the wild and without any help?
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Summary
It was hard to explain, exactly.
A feeling. Walking into his room and his clothes not being where he left them, the bed messy and unmade. His favorite seat having a new indent in it. Mostly-empty bottles of condiments in the fridge, a spare pair of shoes by the doorway. A glimpse of bone as he walked up the stairs. His brother talking about things that Sans didn’t remember. Hearing people use his name for someone else.
A ghost living in their house.
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Summary
He was gone. No warning, no alert, only taken.
Red is scared, Sans feels the darkness closing in.
It's done nothing but rain since he went missing.
Series
- Part 15 of Typeface: sans-serif
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Summary
After Sans and his friends blue and fell have been kidnaped by a skeleton named nightmare, it's up to him to help get them back. However, he realizes how dark this rabbit hole gets when he stumbles into the realm of Nightmare's kingdom. Seeing the residents are twisted and unlike what he had seen back at home.
- Language:
- English
- Words:
- 3,318
- Chapters:
- 1/?
- Kudos:
- 2
- Hits:
- 16
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Summary
After Subject 2 asks about his digital records, Dr. W.D. Gaster comes up with a new way to keep his experiments entertained.
OR.
The story of Handplates, as told through 2-P's little notebook.
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Something is wrong.
You don't know where, why, or how, but you know something happened.
You can feel it, the claws that grab onto your skin, threatening to pull you apart and under to a world of the void.
The universe is screaming, you're screaming.
But you know nobody will come.Why is it that when something is so close, you still can't grab it?
Why is it so hard to keep one promise?
You're trying, you swear. But no matter what, you can hear it calling you.
You don't want to be alone, but yet it's better that way... right? -
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Summary
Sans turned to Papyrus. "you..sure you want to do this Pap? We can always send them with Undyne and Alphys-"
"YES, OF COURSE! FRISK IS MY FRIEND AND WILL NEED TO BE LOOKED AFTER IN THEIR SICKLY CONDITION. I AM THEIR BIG BROTHER AFTER ALL, IT'S MY DUTY TO PROTECT!" Papyrus frowns as Sans glances away. "YOU..DONT THINK I CAN DO IT?"
Sans' eye sockets widened. "no that's not it, bro. It's just..."
"Just..what?"
OR
Papyrus wants to prove he can be a good big brother to Frisk! How hard can it be to take care of a 5 year old human?
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Summary
A strange infection has broken out across the Underground.
Echo flowers have become strangely hostile and aggressive, attacking and infecting monsters and taking over their bodies.
Most of the Underground has become completely overgrown by these dangerous plants, and only a few safe zones remain.
Sans, the Royal Scientist, must figure out a cure with the help of his assistant Alphys, before everyone he loves becomes infected by the echo flowers.
When a human falls into the Underground, Sans must figure out if they're the key to saving everyone, or the harbinger of doom for his friends and family. -
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Summary
After Sans escaped from bad humans he gets found and taken in by Red and Edge. But Sans his past is trying to gain in on him, as the ones that had lost him were not ready to let him go. How ready are they to make sure Sans can stay happy and with Red and Edge? Or will he get dragged back to return to that awful place?
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I'll Gorge Myself To Memories (I Already Know I'm Disgusting) by CrossoverAU
Fandoms: Undertale (Video Game)
04 Aug 2025
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Summary
Sans knew when to stop....
....right?
He knew that once you were full, you were full. There's no reason to keep going. He wasn't hungry, he didn't need more.
.
.
.
But what if he lost it? What if he and his brother went starving again? What if all they had left were scraps? What if they didn't even have that? What if things went back to the way they were underground?Sans knew when to stop...but that doesn't mean he will.
- Language:
- English
- Words:
- 1,948
- Chapters:
- 1/1
- Kudos:
- 12
- Hits:
- 74
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Summary
He reached for Papyrus’ bond in his SOUL. There was a hole where it was once nestled.
OR
Papyrus is dead and Sans thinks about it.
Series
- Part 6 of Sugars angst fics