Undertale Stories

Saitama gets stuck in the Underground. Well, this'll be interesting!

(TW: unaliving thoughts and memories at the beginning. It gets better over time, don't worry! Trauma is difficult to overcome...) You didn't want a second chance. You didn't want to survive. You wanted the sweet release of death. But it seemed like the universe was far too cruel to allow you even that. It took away your memories, your free will to choose whether you live or die...hell, it took the one thing in life you owned! Your own name! And now it seemed like you had to live yet another cruel life, doing things you never wanted done to others. But...at least you could do things your way. Maybe this second chance wouldn't be so bad... (Reincarnated as Nightmare Sans, but unlike other stories, you have no clue what Undertale even is) (WE REACHED NUMBER 1 IN THE UNDERTALE TAG YOOOOOOOO) (9/13/25)

TW: Swearing and slight gore Y/N reincarnates in the anti-void as a Voice... Will he befriend error or will they make them hate their guts? And will they meet other people? Only time will tell. Hello, this is going to be my first book and idk if it's going to be good so meh :v This story was inspired by transported as a voice by Virus_bOi, I obviously do not own undertale and I don't keep up that much with the fandom, so some personalities might be different, but hey. I can just say that it's a different multiverse ¦ ] The cover image is from Shira Wolfiecute on tumblr

Not every story has a happy ending. Some... are forgotten before they even end. Abandoned characters. Incomplete worlds. Destinies that never reached their conclusion. But... what if there were a place where all of this could continue? Legend has it that there are two apples: the Apple of Positivity... and the Apple of Negativity. Two opposing forces. Two fates already known. But no one speaks of the third. The one that should never have existed. In a refuge hidden between universes, where not even the guardians can see... broken stories find a new home. Or remain trapped... between what they were... and what they never came to be. An original AU inspired by Undertale, where even the forgotten can still change everything.

Reborn as the guardian of positivity, you find yourself in a strange new world, uncertain of what it may hold. Navigating it isn't easy with gods like Nightmare and Error trying to strike you down every step of the way. But unlike the previous Dream, you have nothing to lose, and are determined to forge a better path than the soul whom you have replaced.

In a superhero society where those who shout the loudest usually steal the spotlight, true strength sometimes prefers silence. Meet Ayato Saishiki. He doesn't have infinite super strength, he doesn't generate colossal explosions, and if given the choice, he would spend his days in absolute silence with his precious noise-canceling headphones. However, he is the wielder of the Soul Spectrum-an overwhelming Quirk that manifests as seven hearts of pure light floating around him. Each color is a virtue; each virtue is a devastating weapon. But this power demands a lethal price. To avoid frying his own nervous system with Chromatic Exhaustion, the stoic boy in the neon tactical coat keeps his eyes closed, his ears covered, and his emotions strictly locked away. Admitted to the prestigious U.A. High School and quickly thrown into the eye of the storm as the Class Representative for the chaotic Class 1-A, Ayato views heroism differently: the battlefield is a chessboard, villains are mathematical variables, and the safety of his classmates is the absolute rule of the game. Between loud peers, rigorous lessons, and the constant threat of his own physical limits, the silent strategist will have to prove that sacrificing his own mind isn't the only way to be a shield for those he cares about. The board is set. The pieces are in position. And the seven souls are about to shine. Saishiki Ayato's game has just begun. ((Note - I am not the owner of My Hero Academia or any of their characters, the entire credit goes to the original creators.))

I have too many memes so here

"The Black Determination" In a world that appears ordinary on the surface, Yuto is the exception. A human child bearing a unique soul-pure black, forged from profound hatred born of a family tragedy he alone survived. When Yuto leaps from Mount Ebott, he is not searching for adventure. He seeks answers... or perhaps an end. In the Underground, Yuto faces a single choice-one that will decide the fate of entire realities: Will he find salvation and become the hero who masters his darkness to save the Dreemurr family and all monsters? Or will hatred consume him, turning him into judge and executioner of absolute genocide, imposing eternal silence upon a world that failed to grant him mercy? "The Black Determination" is a tale of two paths and one inevitable fate. A story that reshapes the rules of Undertale- where there is no mercy, no reset... only Yuto.

Have you ever thought about what it would be like to be.. Sans? Be Papyrus' lazy and playful brother? Be a comedian with endless jokes? Be the mysterious judge? Be well-liked? You envy him. You wanted to be him. Yet nothing could've prepared you for what's coming. . . . (WARNING, THIS IS A MIX OF CANON AND FANON FACTS. THERE MIGHT BE THINGS YOU DONT LIKE BUT JUST BE THE BIGGER PERSON AND TOLERATE IT. THIS IS NOT MEANT TO BE TAKEN TOO SERIOUSLY AND IS INTENDED ONLY FOR ENTERTAINMENT.) (Cover made by me. As you can see, I made that thing on IbisPaint. I understood nothing about making book covers and I messed up on the proportion many times so I gave up and that's how the cover came to be. Idk how to shade and make backgrounds/landscapes btw) (Tbh I wished I made this far earlier because it's late 2025, no one is going to read this pile of nonsense. 😭) YOU GUYS HAVE AN OPTION TO CHOOSE THE DIRECTION OF THIS STORY THROUGH FREQUENT POLLS I MADE!!! First thought of and made on 1st Dec 2025 Posted on 6nd Dec 2025 cuz I was feeling confident for that hour. I can proudly say I've been doing this book since last year hahhahahahahahaha (get it cuz I did this thing is Dec 2025 and now is Jan 2026?) I made the cover btw

An experimental fic I have featuring my own Undertale AU, Humantale, may or may not continue it. (Credit to the cover goes to xchocokills on Pinterest.)

Reader falls into a state of apathy after a major tragic event that gets them to seek help. They are selected to be given a service Bitty when doctors found out they live by themself. What happens when the reader starts to dig up the past. In a world of magic and secrets unexplainable things might happen. At least you wont be alone.

sOoo I've had this idea where they have soul mates. Like everyone is born with a half heart necklace. Every time the person gets near their soul mate it will heat up as they go farther away it gets colder. EEE I couldn't decide wether I wanted this to be errorfresh or kustard so not many people like errorfresh so it's kustard ;-;

(Cover by Hetiru on Deviant Art.) Several years after Monsters returned to the surface, this story follows Y/N, a quiet and reserved highschool student just trying his best to manage his day to day life. Between the bullies, lack of a family or friends, and two new transfer students making everything even more difficult for him, Y/N decides he doesn't need to deal with it anymore - and finds himself at Mt Ebott. ⚠️ WARNING ⚠️ This is a somewhat dark story. If that's not your thing, or if subjects like depression, suicide, and self harm are difficult for you, please do not read this. Otherwise, please enjoy! (Once I actually start adding chapters of course.)

On hiatus until i gain motivation or inspiration. I kind of got too into my own original work. Might update this occasionally if I gain motivation. --- Mystia was working overnight again in her food stall, and just when she was about to close, she meets an odd looking skeleton who asked for mustard! Sans the skeleton reveals himself as an unfortunate, albeit unique outsider, and becomes quite the unique background character! Maybe this leads to a bunch of incidents? Or maybe just a chill slice of life? ...Maybe. --- AN: An Undertale X Touhou Project crossover fanfiction stupid thing i thought up on the spot. particularly because i wanted to just meme out kaguya somehow. this would be more slice of life focused. there wont be too much action here, or important plot scenes to consider. Make sure yall get this higher than my cote and frieren slop!! This is actually VERY good in comparison to those two!! --- Thumbnail Art by Narisukusa! Subscribe to his youtube channel!

This isn't a normal Y/N story the bad sanses do a raid on an illegal auction of many rare, dangerous, and illegal things. but after the dust settles, killer finds what he believes to be a weird mutated cat and decides to take it back with him art by me. my first book, and feel free to correct my spelling in the comments Y/n means your name Y/fc means your favourite colour Y/fm means your favourite type of meat Y/hl means hair length Y/hc means hair colour Y/sc means skin colour Y/ec means you're eye colour

Pastel, a gentle Ink variant who was possessed for centuries, finally manages to regain control. But their magic is still tainted, and the multiverse isn't as safe as it once was. They'll need help from Blue and Dream to adjust.

A story of a young Ink discovering what it means to be a Protector of Creation, as he finds his place in the Multiverse.

Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that never seems to end. But there's something different about this run. Another human's fallen down... the kid's sister.

(First Story!) This takes place after Chapter 1 of RWBY and Episode 2 of Indie Cross with a few changed events. (Mainly The Knight and Beheaded not getting petrified.) Explanation of Story: _______________________ Shovel Knight was about to finally return home, he bowed to others he has made friends with till the silver light of destruction had struck... The Portal Collapsed into hundreds of new white portals. Cuphead would get ready to fight but portals kept opening so he grabbed The "Sun" and Niko and smoke dashes way with them. Shovel Knight would try to fight back but The Rogue's Destroyer of worlds would be summoned and knock everyone away into different portals. Madeline was about to fall off the floating debris but the Drifter would save her but right as he does the Golden Curse floated above them, ready to put an end to their lives but the Knight and Beheaded would dash in using Lightspeed and Crystal Dash to save them both and they all fall into a portal. But where do the portals lead this time...? Well they lead our group into a little world called... Remnant, where they are scattered throughout this land near a popular Academy called Beacon. There they will meet brand new friends, allies, enemies and more and it starts with meeting a simple, honest soul..

My other art books are full, so here's a new one! The third! I wanna share my tumblr art with you guys <3 I add 3 new chapters at a time. Not everyday updates, just whenever. ENJOY!!!