Underverse Stories

(m / n) (L / n) is a 19 year old boy and he is frisk's cousin, (m / n) always looks after frisk like his own sibling because since childhood frisk has always been treate...

Gone. In a single moment, in the blink of an eye, everything you have ever known or cared for is eradicated. Hopes and dreams, traditions and stories that date back cent...

All right go to Jael Peñaloza for storyline I do not own any of the character besides y/n aus and myself

This is bad. like really bad.

what would you do if all of a sudden some small skeletons appeared out of nowhere one night and we're so small and helpless you couldn't say no to. So your living with s...

Error404 has just lost his brother and all he has cared for. It's the same with Geno, who is losing control of his life equally. Error plus error equals destruction? Not...

He wakes up in a white place... (Man wakes up as a alternate version of Cross Sans,neat,the cover is mine..Cross Sans is not mine or any Sans you will see besides this a...

20 year old (Y/N) is no ordinary human. About five years ago she was taken from her universe by Ink, a Star Sans who creates and protects AUs. He claims that she's dif...

status; completed. » fanfiction, very old book. tysm for reading<3 ps. hot ppl are those who reread it, ily hon<3 ꒰🖇꒱ 私は安定していると思う。♡꙼̈ ࿐࿔ ➽───────────────❥ crackfi...

You. Yes YOU! 🫵 You randomly wake up in a middle of a battle to notice that you are now in the guardian of positivity body! You can't remember who are you! What you are...

You are the oldest Sans with no Au left. You stay in your empty black and white glitching void. You miss everyone in your universe. You became depressed out of lonelines...

Matt was a regular person who was a big fan of Undertale and its fangames. One day, he dies because of a person accidently knocking him off a mountain while he was hikin...

once a happy family turned into a broken one

[discontinued] [Rewrite 100% Confirmed] "𝐈 𝐰𝐚𝐧𝐭 𝐚 𝐜𝐡𝐚𝐧𝐠𝐞 𝐭𝐨 𝐡𝐚𝐩𝐩𝐞𝐧!" "𝐈 𝐣𝐮𝐬𝐭. . . 𝐝𝐨𝐧'𝐭 𝐤𝐧𝐨𝐰 𝐰𝐡𝐞𝐧 𝐢𝐭'𝐬 𝐠𝐨𝐢𝐧𝐠...

I want to make a story about Dust tale sans. however I want to give him a whole new personality, background and even powers. somethings will stay the same. but if your i...

(UPDATES EVERY FRIDAY) NIGHTMARE is a sadistic bastard, that's just a fact. His goal is to corrupt Dream's soul and prevent the Doodlesphere from feeling positive emotio...

MY N0.1 OTP!!

What happens if error was ambushed. But not to kill but for something else? What if the gang thinks he's gone but he's really not? How will the gang react if they find e...

this is prob cringe but I think im funny lol ships are in tags none of these characters belong to me this might be funny might be triggering, be warned characters belon...

Y/N moved from her town in Lumenatia to a kingdom called Detpurroc that rules strictly and selfishly. since women have been restricted from normal jobs she has to work a...