When Frisk runs away from the orphanage, his older sister Jett has to go find him in Mt. Ebott's forest and instead finds herself trapped in the Underground where she is introduced to her soul. Jett soon discovers that she holds a great amount of power and quickly finds out that there are certain Monsters in the Underground that want that power for themselves. (OCxSans)

During the usual nightmare Sans finds himself staring at a strange reflection of himself. But something is wrong. When he finally wakes he isn't surprised to find Papyrus in his room, staring down at him. But he is surprised by the changes in his brother since he'd fallen asleep. Who is this evil imposter, and why doesn't his magic work anymore? An Undertale meets Underfell story.

It's been fifty six years since they died in Sans' arms. Fifty six years that the world has moved on without them. Fifty six years he's tried to move on himself. But now Frisk is back and with their return a new journey begins. At first to regain their lost memories, but ultimately to escape a hunter who will do anything to obtain their soul and with it the power to turn back time.

I'm no longer going to be posting updates on here since the amount of activity and feedback I get here is significantly less compared to what I get on AO3. You can find this fic on ArchiveOfOurOwn here- (archiveofourown . org/works/6387460/chapters/14627251) And, as usual, you can find it on my Tumblr- (life-sans-sin . tumblr . com)

First fanfic... When the barrier is destroyed, the last thing the Monsters expected was to be shrunk down and sold off as pets to humans and... something else. And now Frisk can't reset to fix it. The Skelebros must now adjust to being pets to a strange race among the humans. Will they survive with these strange beings? Can they undo these wrongdoings? Alternate universe.

After their sons birth, Frisk and Sans are determined to be the best parents there ever was. However, raising a skeleton could be more then they bargained for. Follow them as they battle potty training, evil closet monsters, and the diabolical PTA meetings. Fluff warning, so fluff, much fluff. Some swearing.

Reader tries adjusting to life after monsters are released to the surface, gradually falling for a punny short skeleton in the process.

Fresh out of college Hannah and her friends Geo and Maddie moved into a mostly monster town, which they kindly named 'Monster Town'. The monsters in the community seem to like the idea of more humans being open minded and moving in. Nothing had prepared the girls for the first world problems they'll run into…like having crushes on freaking monsters.

{WARNING: This fic is INCREDIBLY old, has godawful typos and isn't finished, nor may it ever be completed.} A year passed since Frisk freed the monsters from the underground. They now live with Toriel, and every day is a new adventure as they do their best to help their new friends adapt to living on the surface.

Frisk has been in Europe for 2 years and decides to surprise the Skeleton Bros with a visit. Sans has grown more. Asriel is back. Alphy's experimenting goes wrong- and the Au Sans make their presence known & try to court Frisk. Sans has other ideas. Frisk must decide on a suitor. Mutli-soul bonding(FriskxAU Sans) (Slow burn) (Fluff) (Eventual Smut) (Mafia, Echo, Outer, Swap, UFell)

The barrier had fallen but humanity had been quick to erect a dozen more in its place. Not physical barriers like before. No, these barriers came in the form of 'human only' signs in the windows of stores and restaurants. They came in the form of organized crime, in racial slurs spattered on the subway walls, in the form of paranoia, in the form of an unspoken border slicing down t

Kaitlyn's life was a mess: no job, no friends, and a painful past she's desperately running from. Just as she begins to think moving to the city was a bad idea, she meets a couple of skeletons who remind her what happiness is and introduce her to a new world full of fun, mystery, and some old friends and enemies that may still need saving... **New content out now!**

Summary: This is Underhell. A human king has taken the throne and rules the Underground with blood. You're a grown woman being thrown into the aftermath and only by making friends with a few monsters will you understand who the real ones are. Tumbler account is amartin22stuff for anyone curious.

So UfSans life is a living hell. We all know know this... He is nothing but a bag of mustard stains and crippling depression. Does UfPaps really hate his brother like he claims? What happens when UfPap pushes Sans to far? How will UsPapy take this story! Spoiler:Honeymustad! (READ) You can choose between "brotherly love" or "actual love" I tried to even it out! NO SMUT in this...

After a harrowing night, UFSans finds himself in a house not unlike his own. Without much warning he meets his double and his brother but they are different. Too different? Only time will tell. Warnings: Launguage/Sex/Drugs HONEYMUSTARD TO THE MAX!

Living when people fear you is difficult. Especially when it's because of being different. Callie would know. That's why she didn't want to live. But when a friendly monster unknowingly saves her life, she decides otherwise. He also knows. It's amazing what mutual understanding can do, right? (Papyrus/OC. M for themes/language and eventual smut.)

In the final installment of the series, you and Sans struggle to keep your heads above water when the whole world seems intent on dragging you down. (Part 3 of the "Still Counting" series) (Rated T for: graphic violence, body horror, disturbing themes, suggestive themes)

A different kind of Undertale story dealing with alternate timelines and the quest to find answers when two timelines come together and crash. It's my first fanfic so please be gentle. Its more fluffy than smutty but there is some cussing so rated M just to he safe. Oh and no I do not own Undertale, Toby does, bless his soul for this game. I also don't own the cover image.

Once again Sans finds himself on the surface awaiting reset. He distances himself from his family- why get attached? But this time, Sans is not alone in his struggle with fear and anxiety. After taking in a little orphan monster, will he finally be able to forget his nightmares and focus on his friends and family before he looses himself, and those who are most important to him?

Underfell is a living hell for Sans. He's mistreated, unloved and unwanted. By a random act of fate, he is sucked into a portal at his darkest moment and spit out into the Underswap universe, where he meets his alternate counterparts. The long healing process must now begin and Sans and his Papyrus must both make choices that will change their relationships forever.

Sans died. But then he kind of un-died. Needless to say, everyone's confused, but Sans refuses to talk. Or maybe he just doesn't know? Rated T for mentions of torture and profanity and some possible trigger warnings.

After the events of "Tally Up Your Sins," you and Sans have to learn to live with your pasts and figure out how to move forward, all while unraveling a mystery that dates back to the first war between humans and monsters. (Part 2 of the "Still Counting" series) (Rated T for: body horror, graphic violence)

Sans had lost all hope at having a better future. Frisk was dead, and they were unable to reset. The monsters were almost completely drained of magic, leaving them a tiny mockery of their past selves. He was separated from his brother. But, perhaps the human that bought him at the Verity Monster Pet Store could give him hope. Maybe he could find his brother, and save the others.

This is my first attempt at a reader POV. Just a few weeks ago the barrier was broken and monsters are now living amongst humans. Meanwhile you're trying to run away from your dark past and your life hasn't been easy since. You try to find comfort in the small things that you can until someone sits next to you, igniting a tiny fire back into your broken soul. Rating may change.

The monsters have returned to the surface and almost all humans love them. Bringing wonderful new advancements. Making life more interesting and bringing joy to everyone. But not all humans love monsters. The world after all is full of Floweys. Will have all major characters featured and will be a long story.

A college senior starts a blog about Monsters and finds that Monster life is a lot more interesting (and complicated) than she had supposed. Mostly thanks to a certain skeletal comedian.

this is fontcest but sans is female. This will deal heavily with gender identity and later chapters will be higher rating so I'm just going to put the rating at M.

You are a human nurse that works at The Hospital of Humans and Monsters, name courtesy of King Asgore. Things are going well for you there, but there's always an influx of monster patients coming in with serious injuries caused by abrasive humans. Things go even further south when you find yourself being stalked by humans literally blocks away from the hospital... Smut later on!

You're just scared of them, you don't hate them. When your mom makes you go spend the rest of the summer with your grandma because you were being too lazy, your phobia intensifies when you're constantly being watched by them. Especially by a short skeleton - which by the way, seemed to scare you most for a reason. / ON HIATUS

*Discontinued* UnderFell Sans knows how UnderSwap Sans feels about him, but in fear of being rejected by everyone he loves, he doesn't tell him about his returned feelings. When things get to difficult, will he run away or face his problems?

Ebony has been stuck in the Underground for two years now. She struggles to find a way out of there, with hopes of finding what had been lost to her. She just wasn't expecting any... feelings to sprout while Underground, and it begins to interfere greatly with her plans of escaping. (OC/Sans, as well as a little bit of OC/Grillby. May contain smut eventually, but has some fluff!)

Being a waitress at a dinner can sometimes be a real drag, but after the barrier to Mount Ebbat has finally been destroyed, and monsters once again live among the humans, your life changes forever!

Less than a year after the Barrier was destroyed, an unknown monster begins attacking humans during the night. A pattern quickly emerges; the humans are all unsavory types, and while some of them are roughed up pretty badly, none of them are actually killed. With monster/human relations already on shaky ground, what kind of trouble can a vigilante skeleton monster cause?

Nineteen-year-old Frisk has led a happy, safe life after breaking the Seal that has hindered the Underground for so many years. But now, she faces a new struggle...a crush. And she has no idea how to go about dealing with it. (Sans/Frisk. Fluffy, sexy, with some occasional plot sprinkles thrown in. Hope you enjoy!)