You blamed yourself for what the other you did, and you had a plan to fix it all. Sans should be happy with your decision. After all, you killed his brother didn't you? So why did he stop you? Why did he take the knife away? You just wanted the pain to stop. You didn't anticipate him saving your life. Contains mentions of self-harm and suicide. Now multi-chapter

You are kandell frank, you run away and life on the streets. You got thanks to.."A mental discord" much respect and use it to protect monsters who got in troubles. You thought the whole life it is killed or be killed thank to the mental discord until you meet the little ambresor of the monster and his frinds.(Sans/OC)

Being you're average person, reborn into a world full of anthropomorphic animals, and as the older brother of Nick Wilde. Life was going to bumpy no matter what I did. Between balancing: maintaining my identity, trying not to doom Zootopia, and create a happy ending, I'm sure in for quite the adventure.

Not for the first time ever, Judy takes up the task of looking after a 14-year-old fox. Of course, she didn't view it as a challenge (having over a hundred younger siblings did help), but unexpected complications arise. Will Judy be a capable guardian for her new, long-term guest? (Rated M for inexplicit violence)

After being alone on the surface for over 2,000 years, DJ doesn't even know why she gets up in the morning anymore... But after the barrier in the mountain breaks... Will her new pasta loving, spear chucking, always sleeping, nice-cream serving, determined friends give her a new just as happy life... or an even better one than the life she had before the barrier was made...TforCuss

When Flowey decides not to tell Frisk about a 'better ending', Frisk leaves the underground to try to find a way to free the monsters, promising to return when they are able. When Sans receives a call from Frisk four years later, she tells him she's coming back within a week, but not before someone else drops in. (M for language and possible sin later, F!Frisk, SansXOC)

Katy is the child of Frisk and Sans (in the future). Because of a tragic turn of events, Sans has sent her into the past (how we presently know Undertale) to remain hidden. Sans thinks it is best for her to stay with present-day Sans and Papyrus, but for them to think she is just another human. Not related to them, and not half monster.

-Discontinued- A year after their happy ending Sans begins his new life on the surface as a University student. He meets a girl who is one of the kindest people he has ever met. Sarah was an average girl on the surface, but one day she meets a pun loving skeleton and her life changed for the better as she is given a new joy in her otherwise bleak world.

One slip on the part of Chara, and a desperate act, has Frisk wresting control of the resets away from the demon possessing her mind. The next reset starts too early, in a place she didn't expect. Yet still, she has the DETERMINATION to save everyone. Even if it takes her whole life.. even, if he never forgives her. Fem!Frisk [ Sans x Frisk ]

Monster's have been on the surface for 4 years and you have been chosen as a lead researcher in a joint project between human's and monsters. As if that wasn't exciting enough you finally get to meet your internet friend Papyrus.

16-year-old Sawada Tsunami wakes up one day to find up she now has a sadistic tutor in the form of an infant. Tsuna's hiding a bit of a secret from her family, though. It's not like she could just tell her mother, let alone her father, that she's in charge of a Yakuza group. First attempt at fanfic. Rated for later chapters. Crossposted from AO3. Fem!Tsuna/Guardians eventual rom

Many years ago there was a war between MONSTERS and HUMANS. After suffering a major defeat the HUMANS decided to hide themselves within MT. EBOTT to regroup, only to be sealed away by the MONSTERS. In the present day, Frisk-an orphaned MONSTER-travels to the mountain cave to find what they have lost long ago. some place to belong.

Frisk had lived on her own for nine years after releasing all the monsters from the Underworld, but now that she's grown and, for the most part, mature, she's decided to move back in with her Momster, Asriel, and Asgore, but things turns spicy when Sans finally reaches monster puberty.

After you have finally found a person to love you, you make the stupid mistake of falling through a rip in the universe. Now as you try to get home you end up running through different realities and different versions of your very skeletal boyfriend. Can you make it through without falling for his alternate selves? Or are you just what is needed for all of them to finally be happy?

Faced with the choice of becoming homeless again or taking in monster roommates, Ashley Jones must bring her worst nightmares into her home and keep them safe from a stranger looking to harm them. Rated M for Violence, Gore, Adult themes, and Sexual Content.

Gaster has made a habit of watching the timelines from the safety of his gray room. Observing. But now, something has happened to the timelines. Something new. Something very, very... Interesting.

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!

Frisk's homeworld is swept away by the monsters and Frisk is sent to a whole new galaxy! What will she find? Not what many would expect! Eventual Sans X Frisk.

Tsuna's world is turned upside-down when his life becomes a video game. Or maybe that's just because 'he' isn't really a boy anymore? /"Hieeeeee! What do you mean the male character isn't unlocked yet?"/ VideoGame!kind-of-fem!Tsuna

Everything changed when the best candidate for the Vongola position met the blind, kind and protective man – who happens to be a hiding wizard – in a café before the presence of mafia arrived in their life. Slight AU.

When a human meets a creature removed from time against its will, the human makes a decision that becomes life changing for everyone involved. (Spoilers and headcanons ahead. Rating changed due to language, possible violence later on.)

summery: Frisk is the monster ambassador and is in need of protection. With the constant threat of human assassins, mobs, and the organization known only as the 'Priests of Purity', she will need the best. With the aid of the Skeleton brothers and her natural psychic abilities, everything should be fine. Right? ( Sans x Frisk, Papyrus x Frisk,)

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.

W.D Gaster, former head royal scientist wonders what would happen if he messes with the soul of a human. What he doesn't expect, is the sheer power of determination, and its ability to anchor even a soul lost in the void back to its rightful place.

Frisk is a quiet child. They were a SOUL made of kindness and DETERMINATION. They withheld their tears and loved their enemy as a friend. However, they also kept a secret from those that had grown closest to them. A secret that could mean permanent death. No more RESETS. No more SAVES.