Undertalefanfic Stories

Want to talk about falling into the wrong place at the wrong time? Y/N definitely scored big time on that one. One moment she's falling, the next she finds herself trapp...

It's only been a few years since monsters have been released from their underground prison. In some towns, monsters are welcomed with open arms. Others? Not so much. Y/N...

This is a story before the last human fell around the time Chara was still alive and well. Humans were not being hunted till the adopted prince's passing, however with a...

Au Sanses x Reader If you like edgy and scary Sanses, and romantic and fluffy and edgy scenarios, then this is the book for you!!

You were always a curious child. One day, your curiosity took you too far. You lived not to far from a mountain, MT. Ebott, and always wanted to see what was on the top...

After the barrier had been broken and harmony between monsters and humans had returned, a new sinister force arises after peace returned to the land. When the darkness t...

Y/N was a normal teenager who gets bullied everyday, she has only one friend who called 'Frisk' one day they decide to climb the mountain but then... "I want you to...

Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful...

Slice of life and adventures with Melati!sans and his loyal companion Jasmine, together they will travel across the Multiverse as traveling Merchants. what will they fi...

When cardin revealed jaune's transcripts to everyone in beacon he was bullied everyday except Team RWBY, Team NPR, Team CFVY, The arc sisters, Saphron's family, Ozpin, G...

Innocence had already been more or lost by the Dreemurr brothers, but the friends and memories they'll make along the way are certainly worth it. The question is: will t...

Mettaton thinks you look absolutely fabulous~! Come and read this book so he can give you some love darling~!

A second-person relationship with Asgore Dreemur, former king of the underground. With all the pressure on a sixteen-year-old hiding his sexuality from his family and th...

It's been a few years since Y/N started her family. Without Honey, she made due with what she had; that being the cafe, her brother-in-law Blue, and her two twin sons. O...

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

"Psychotic tendencies..." As a child, Y/n L/n had a good life. She was always complimented for her h/c hair and e/c eyes. She had a loving little sister and a...

One day, Sans fell sick. His sickness came out of nowhere and it cannot be cured no matter how many medicines Gaster gave him. Because of the sickness, Sans stayed still...

(Y/n)(L/n). A girl who received an unknown email telling her to download the link of a "game". She didn't know what could happen.. Except maybe a broken laptop...

This is the first fanfic I've ever written so plz don't judge. Reader-Chan is a female BTW but guys can read too. I hope u enjoy it! ^-^ COVER IS NOT MINE

"Are... Are you going to come back?" I ask the black gooey skeleton. I bite my lip as I hold back my tears from falling. I grasp into the end of my gloves tigh...