#undertale fanfic

[charamelwrites]

CHAPTER 32 beach chapter doodles! :p (somebody asked for more cross, here ya go!!!)

fanfic: heal me

[neolxzr]

reject null hypothesis a college deltarune charisk fic, 23k words, 1/1

Frisk, natural flirtation machine, finds themself completely dumbfounded as they try and fail to ask out their latest crush. The longer they stall, the more a sense of nervousness begins to creep up their spine. This might be a little less casual than they'd originally thought.

Chara, ever curious, wants to understand why they find themself inexplicably drawn to another human despite their usual and utter hatred for their own species. What even is romance, they wonder? Is that what this is?

Together, they experience their first few months of college.

-

or: frisk falls off the deep end, chara tries to figure out what the hell their deal is, and they maybe start to fall in love.

the sequel to my previous deltarune charisk fic is finally live!!! please go check it out <3

[jampop01]

Ayooo! how r u? and can i ask a request for US sans ,UF, classic and swapfell's reactions for while they doing something (cooking,crafts,building an ikea etc.) SO fucking up everytime they try then with a loud sign their SO ripping out their soul and doing the stuff right and good? and separate pretty pls cherry on top! lav your work and you r free to ignore and if you wont THANKS PAL! byeeee

“Take my soul away, literally.”

US Sans, UF sans and SF Sans x Human Reader (Separately).

Author’s Note: If I am going to be completely honest with you, I had a hard time reading and figuring out what you wanted, not that it’s bad though! I was having a difficult time processing and I kind of mix the words up so sorry if it isn’t this what you wanted!

Warning: strong language (in Underfell’s headcanons section), ripping your soul out (for some reason).

US Sans

You and Sans were just cooking in the kitchen since you two were having a get together with the Monsters in the Underground.

Sans was doing a pretty good job with making some of the tacos and burritos, while you! Weren’t doing too good.

You were struggling on making the burritos, and you fumbled every single time, and it made you pretty pissed off but you had to be demure, especially in front of your chubby tall skeleton boyfriend.

So you took a deep breath and pulled your hand out, Sans noticed this and looks confused.

”Princess? What are you doing? You need any help?”

Punched your chest towards where your soul is, ripped it out casually, then continued working on the burrito and it doing well! And so were you!

Sans however wasn’t, in-fact, he was horrified, petrified and terrified at the sight.

”Princess why would you do that…”

After that, Sans took your soul and put it back where it belonged, placed you where the living room is where papyrus is as he continues to do the rest of the food for the get together party because of the thing you just did, for some reason.

”what happened with you?”

You told him what happened, way to casually.

”that’s cruel kiddo, maybe I should do it get out of doing anything heheh.”

”Papyrus you are LITERALLY SITTING ON THE COUCH BEING LAZY RIGHT NOW!”

UF sans

You got sans to do something for the party you and Papyrus were hosting for the monsters in the underground, sans begrudgingly helps since you will be there.

You both were setting up the decorations at your’s, sans and Papyrus place.

And to your surprise, sans was actually doing a great job at it, and you weren’t doing well but the effort matters!

But you were determined to make it look perfect but wasn’t working out.

You just put the items down and inhaled and exhaled, sans looked over to see what you were doing, laughing at your misfortune.

”havin’ trouble ey sweetheart?”

You nodded towards sans and then pulled your soul out, like it was a normal thing, then finally did the decorations.

sans looked shocked, didn’t even make a snarky remark just pure shock and then looked at you weirded out like you done the most outrageous thing to man and monster kind.

”sweetheart what the fuck was that”

He then forcibly put the soul back in and say you down on the couch and did the rest of the decorations.

And if you tried to get up he’ll just put you back down with his magic.

”don’t even try it sweetheart, i am watching your every movement y’know. i ain’t stupid yer idiot.”

SF Sans

Sans forced you to get up and helped him with the cooking, since he was hosting a party with the monsters in the underground and you agreed to, not that you had a choice anyway.

He was cooking some spicy food for the guests since his love for cooking is high as Mount Fuji, while you are struggling so bad.

Sans over here wasn’t really helping either. Instructing you on what to do and how to do it instead of being an idiot.

Until you stopped for a bit, which confuses but annoys Sans.

”Eh? What the hell are you doing Doll? We aren’t done here!”

Before he scolded you any further, you ripped the soul out of you and continued working, actually doing it right and you were happy.

Sans on the other hand was disturbed, disgusted and disappointed.

”Doll why in Queen Toriel’s name would you do such a stupid thing, I thought my brother, Paps was stupid but you, are very idiotic.”

Like UF sans, forcibly puts your soul back in you but making sure it doesn’t break, forces you to suit down, and cooks the rest of the food while he forces his brother, Paps to watch over you.

”Wow, didn’t think you would that kiddo, that’s pretty funny.”

”SHUT UP PAPS! DO NOT ENCOURAGE MY PARTNER TO DO MORE IDIOTIC THINGS!”

Author’s Note: Hope this is what you wanted! Enjoyed writing fell!sans!

[linn-vigilant]

Today is the first anniversary for my fic, To Repay Your Love!

I started posting my fic on Ao3 March 24, 2025. What started off as a small gift in a Google doc for my amazing partner @floofanflurr very quickly became a huge personal journey. These characters became so dear to me, and Frisk's journey of recovery and finding their true family ended up healing something in me, too.

Thank you to everyone who has shown love for this story over the past year. Hearing the ways TRYL has given people joy, catharsis, or a feeling of being understood means more to me than I know how to express.

So - to anyone who has read TRYL, thank you so much for being with me on this journey. We'll still check in with this family from time to time - you're always welcome to stop by! In the meanwhile, I wish you love, safety, and peace, wherever your journey may lead you.

[asaila-ao3]

More Than Meets The Eye Fic Cover

I AM GOING TO PASS AWAY ACTUALLY 😭💜💜💜

@shadowyheartz (AKA Lyrica) made a cover art for More Than Meets The Eye and I am NOT NORMAL

I told them they could go crazy with their own interpretation based on my longfic, and they really said “bet” and proceeded to emotionally destroy me.

Seeing MTMTE turned into cover art like this feels so surreal. Like… this is my silly little emotionally damaging skeleton fic. My longfic. My reset angst jar. My “love will find its way back but this time it has to knock first” fic.

AND NOW IT HAS A COVER???

I am staring. I am sobbing. I am chewing drywall respectfully.

Thank you so, so much @shadowyheartz. I love this more than I can properly explain. 💜💜💜

[readersregrets]

Hi I just found your blog and was wondering do you write for undertale yellow? if not then its ok to ignore and delete this! For some reason my obsession with this game has decided to invade my brain again

If you do then would you mind writing a starlo x sick human (young adult btw) reader? While the reader is in a feverish state they ramble on about how they wish they could redo their first encounter with a monster as they didn't know that the monster didn't mean any harm ( if I remember correctly bullet patterns are a greeting of some sort?) , but since reader thought they were in danger ... things didn't go well for the monster. Since then they had learned that the monsters were kind. Basically the reader has been hiding some regrets and it's only while in a feverish / in and out of consciousness state that they are able to open up about it. Preferably romantic but platonic is fine if that is easier to write.

Anyway thank you and hope you are doing well!

Starlo/Guilty human reader

✩₊˚.⋆⭐🏜💛₊˚.⋆✧

The clinic in the Wild East had a particular kind of quiet.

It was the watchful quiet. The kind that hummed faintly with the sounds of medicine bottles, soft footsteps, and the occasional distant cough from behind a curtain.

Starlo sat beside your bed like a guard posted at the edge of a frontier town.

At least, that was the image he wanted to project.

Hat tipped low. Arms folded across his poncho. The sheriff's badge catching the lantern light. A figure of steady confidence keeping vigil through the long desert night.

Inside his head, however, the situation was significantly less heroic.

Okay. The doctor said something about body temperature. Some folks overheat more to speed up the process.

Starlo leaned forward slightly and pressed the back of his gloved hand to your forehead again.

Still warm.

“Looks like the fever’s still puttin’ up a fight there, partner.”

Out loud, his voice remained calm and so very sheriff-like.

Is this normal? How long do fevers last? Should he have brought more blankets? Wait, would that be the opposite of helpful? Maybe fewer blankets? No, the doc said rest. Rest requires blankets. Probably.

You were already wrapped in several layers.

Even now, while sick in the middle of a desert town, you wore thick clothing: a heavy coat, long sleeves, gloves, and boots.

The outfit looked more suitable for Snowdin than the Dunes. He's pretty sure you came from Snowdin.

And, of course, there was the mask.

A dark bandit mask that covered most of your face.

You had explained it once with a casual shrug.

“I liked it, it's ironic.”

Starlo had nodded at the time, as if that made perfect sense.

Internally, he had spent twenty minutes trying to understand what the hell you meant.

You shifted slightly in the bed.

The blankets rustled.

Starlo immediately sat up straighter.

“Easy there,” he said gently. “Doctor says you oughta take things slow till that fever clears.”

Your eyes opened halfway.

They looked glassy.

Unfocused.

You didn’t seem to be fully awake.

Your voice came out soft and uneven.

“I’m sorry, I messed up.”

Starlo blinked.

“Well now,” he said carefully, settling his elbows on the edge of the mattress, “that’s a mighty broad statement there. Care to narrow down the charges?”

Great job, Starlo. Very helpful sheriff dialogue. Ten out of ten.

Your gaze drifted somewhere past him.

“I wish I could just redo it.”

His ears twitched.

Redo what?

Your breathing hitched slightly.

“The first fight.”

Starlo’s posture changed.

Not dramatically.

Just enough that the playful sheriff act loosened a little around the edges.

“You hurt someone?” he asked.

You nodded weakly.

“I thought they were going to hurt me.”

The words slipped out slowly, like they had been buried for a long time.

Starlo listened.

Your voice wavered in the fever haze as the memory surfaced piece by piece.

The glowing bullets.

The panic.

The instinct to defend yourself.

You fought back because you believed your life depended on it.

Starlo’s gloved hands tightened slightly together.

You continued quietly.

“I didn’t know.”

Your voice cracked.

“I didn’t know they were… just as scared as me.”

A long pause followed.

The lantern flickered softly beside the bed.

“I learned after,” you murmured. “Too late.”

Starlo did not interrupt.

The sheriff persona had retreated entirely now.

He simply listened.

“I killed them,” you whispered.

The guilt in your voice felt heavy enough to settle into the floorboards.

You turned slightly in the bed, clutching the blanket closer.

“I wish I could go back.”

Your breathing trembled.

“Redo it. Understand sooner.”

Starlo lowered his head slightly.

Inside his thoughts, something quiet and thoughtful unfolded.

Why you were always so patient.

Why you never got angry when any of the others were too rough with you, but snapped if anybody so much as shoved Karen too hard.

Why you always tried to step between a fight.

It made horrible, perfect sense.

He opened his mouth to speak.

But then you murmured something else.

Something softer.

Something that made his entire brain short-circuit.

“I wish I wasn't human.”

Starlo froze.

Completely.

His mind emptied like someone had pulled the plug on it.

For several seconds, he simply stared at you.

Human.

The word bounced around his skull.

Human?

Human? human?

As in the kind with the SOULS that break the barrier, human??

The sheriff of the Wild East inhaled sharply.

His chair squeaked as he jolted upright.

He had a hand over his mouth before he could say something stupid, and his other hand inched toward his pistol.

Your breathing returned to being slow and uneven.

Still half asleep.

Still feverish.

Still completely unaware that you had just detonated the largest secret in the Underground directly into his lap.

Starlo slowly lowered his hands.

His brain restarted in a very unhelpful sequence of thoughts.

Okay.

Okay!

A human in the dunes with unassuming monsters.

A human in the clinic with all the sick monsters.

A human on his couch yesterday.

A human for whom he may or may not have been developing extremely embarrassing feelings.

He pressed his fingers against the bridge of his glasses.

This is fine.

This is a normal situation.

Sheriffs deal with this all the time.

Wait, no, they absolutely do not.

He glanced back at you.

You looked small under the blankets.

Tired.

Guilty, even in sleep.

And clearly terrified of what the truth might do if anyone discovered it.

Starlo exhaled slowly.

Then he leaned back in the chair, his hat tipping forward again.

“Alright,” he murmured quietly. “That’ll stay between us.”

He stayed beside your bed the rest of the night, pretending not to stare at the bandit mask and think about the human face hidden underneath.

✩₊˚.⋆⭐🏜💛₊˚.⋆✧

The doctor released you once the fever broke.

You returned to your usual routine in the Wild East.

The clothes that made you look different.

The deliberate kindness in every word.

The mask.

Starlo noticed everything.

He wanted to see if anything had changed now that he knew.

But nothing did.

You still helped monsters carry supplies through the market.

You still spoke gently to travelers passing through the dunes.

You still apologized excessively if you bumped into someone.

One afternoon, he saw you kneel down to help a small monster child tie their boot.

Another day, you spent nearly an hour helping an elderly turtle tour around town.

Not once did you act like someone dangerous.

Not once did you look like the terrifying enemy described in old history books.

Starlo leaned against a wooden post near the saloon one evening, watching you laugh with a group of townsfolk.

Inside his head, the realization finally settled into place.

Nothing had changed.

You were still the same person.

The same person who regretted a mistake so deeply it haunted your fever dreams.

The same person who treated strangers kindly because you understood how easy it was to misunderstand each other.

“Reckon that settles it,” he muttered quietly.

Congratulations, genius.

You’re in love with a wanted human.

He groaned softly and rubbed the back of his neck.

“So this is the irony you were on about, huh?”

✩₊˚.⋆⭐🏜💛₊˚.⋆✧

He found you outside, distant from town, later that evening.

You were sitting on a rail, watching the sunset paint the dunes gold.

Your scarf and coat looked absurdly warm for the desert heat.

The bandit mask covered the lower half of your face as always.

Starlo walked up slowly, boots crunching softly in the sand.

“Evenin’, partner,” he said.

You glanced over.

“Evening, sheriff.”

He leaned on the fence beside you.

For a moment, he said nothing.

Then he spoke quietly.

“I know you’re human.”

Your entire body went rigid.

The silence that followed could have cracked stone.

Starlo had read the comics and seen the movies; he expected a speech, a confession about your guilt, shouting, or something.

Instead, you jumped off the fence and sprinted away faster than he'd ever seen you move.

Starlo felt a little embarrassed to admit that it took him a moment to react before he started chasing after you.

“Hold on now,” he said quickly.

Your voice trembled.

“You gonna kill me, sheriff?”

“No.”

“You should.”

He shook his head.

“You're one of my people now,” he said firmly. “You've never caused trouble for anyone here.”

You looked away.

“I killed someone.”

“I know.”

Your shoulders trembled.

The words were so simple.

Certain.

Starlo took a slow breath.

Then he removed his hat.

Without the shadow of the brim, the soft glow of his blue glasses became visible.

“I," he said.

The confession came out more awkwardly than he had hoped.

Wow, that was incredibly direct. Fantastic work. Very smooth.

Out loud, he continued.

“I liked you before I knew the truth,” he admitted. “And knowing this makes it a bit weird, but it doesn’t change much.”

You stared at him.

“Starlo…”

He rubbed the back of his neck.

“I reckon the only thing that really changed,” he said, “is that now I understand why you’ve been keeping folks at arm’s length.”

Your eyes softened slightly.

Starlo shifted his weight.

“Human or not,” he said quietly, "you've been good to us, good to me. You keep me and the other four settled down, and I'd be real happy if you'd settled with us, with me...”

The wind moved gently through the dunes.

Your voice came out small behind the mask.

“You know this is a stupid decision, right?”

Starlo smiled faintly.

“Partner,” he said, settling his hat back on his head, “this is the easiest choice I've ever made.”

He untied his lasso from around you.

You blinked. A quiet laugh slipped out before it became full-on tears.

Starlo froze for a full second.

Slowly, carefully, he wrapped his arms around you.

Your voice was soft against his poncho.

“I think…” You grabbed his hat from his head and placed it on your own. “This is the easiest decision I've ever made.”

Starlo’s smile grew wide beneath his glasses, foggy from the steam coming off him as he blushed and stammered at you.

✩₊˚.⋆⭐🏜💛₊˚.⋆✧

[anakasiatenggara]

I did not just ugly cry reading a very well-written Bad Sanses x Reader on Wattpad called "I STILL LOVE YOU, I PROMISE" by @chaesteria also known as Jinji.

Here's the fic if you want it (The link thing does NOT wanna work guys): https://www.wattpad.com/story/318976400-𝑰-𝑺𝑻𝑰𝑳𝑳-𝑳𝑶𝑽𝑬-𝒀𝑶𝑼-𝑰-𝑷𝑹𝑶𝑴𝑰𝑺𝑬-✧-𝑩𝑨𝑫-𝑺𝑨𝑵𝑺𝑬𝑺