Sans is a comedian, telling puns and playing pranks is part of who he is. Or is it? Resets, his parents deaths, and bringing up his brother alone has all taken its toll on the pun loving skeleton sending him into a spiralling depression. His comic front is becoming harder to uphold against the wear of time, only to be worsened by a total lack of sleep and a new threat in the underground , but will his brother ever discover ... The truth behind his mask? First ever fanfic, constructive criticism is encouraged. I don't own the characters or the art included in or on the book. Undertale and all characters belongs to Toby Fox.

(book 2/2. last book: secrecy) Sans finally reveals his past. but who is W.D Gaster?

(UnderTale completely belongs to Toby Fox, I in no way helped him create the game. I'm just simply a huge fan and want to write a short Genocide route fanfiction. Also, this story is COMPLETED, so don't expect any more updates. I also drew the cover.) A long time ago, the first human fell down into the ruins. A monster named Asriel came to help her, and quickly accepted her into the family. However, a disease fell upon the young child, and she died shortly after. Years later, a 7th human fell down into the ruins. However, the spirit of the first human took over her body, and decided to take out her revenge on the monsters of the underground. This is a True Genocide Story.

everyone knows that sans is hiding something, that he knows more than he lets on. But what? What will happen after they fake a genocide?

For years, Papyrus knows, Sans has had nightmares. Horrible nightmares, nightmares that leave him crying in the dark, crippled in the mind, and barely able to function in life. And that's why Papyrus stays so happy, so bright, for Sans, to keep his brother going through the hard times. But when Papyrus starts having nightmares, he knows something is wrong. And even if it means Sans is finally stepping up to fend for himself, even if he's finally once again filling the role of the protective older brother, Papyrus knows that something dark is coming...

The monsters have finally made it to the surface and have been legalized to roam the surface as they please. The first couple of months have been spent as a paradise where humans and monsters have lived in peace and happiness. But as we all know, humans tend to be afraid of what they don't understand and the appearance of the monsters only seemed to have fueled the rising tension. You are a member of one of the biggest clubs that support the monster's appearance, known as the FMC (For Monsters Corporation). There is a rival club, known as the DM (Destroy the Monsters) that only wants to exterminate the existence of the monsters, and with every passing day, conditions only seem to be getting worse. Determined, you try to make things right and equal for all beings, but things start to alter when you meet with a certain skeleton. And with this certain skeleton, you, dear reader, reveal your biggest, most valuable secret...your little "defect". •°•°•°•°•°•°•°•°•°•°•°•°•°•°•°• COVER ART IS NOT MINE, I ONLY EDITED IT OUT FOR MY COVER. UNDERTALE DOES NOT BELONG TO ME, IT BELONGS TO TOBY FOX. I am simply writing this for the sake of my imagination, as well as for the entertainment of others. Thank you.

You are a liar. A huge one, as a matter of fact. But you're given a book by your aunt who told you to write down at least one hundred true things. It doesn't seem so bad right? But what happens when your cousin's friend won't stop bugging you about said book? Will you reveal the truth about yourself, the weird feeling you have for him, or the truth that your cousin and their family have been trying to hide... Disclaimer: yes, this book is based off of the one by Julie Schumacher. All rights are reserved to her. I just wanted to make a shitty fanfiction out of it.

A human fell into the Underground, and began befriending every monster they came across, including the skeleton brothers. Their acts of kindness seemed to be genuine, giving the monsters no reason to distrust them... Until the human pulled a one-eighty and killed Sans when everyone least expected it. This is the story of how Papyrus grieved over his older brother's death, how he discovered the truth about his mysterious sibling... and eventually, how he decides to avenge his sibling's murder. But in the end he'll forget everything once the timeline resets again, right? That's what he's afraid of. (Based on the AU "Disbelief Papyrus," but with an original twist. There are no pairings except for what's canon. This is mainly Papyrus-centric, but it does focus on mystery of Sans during the story.)

(Y/n) was Frisk's older sister. She became friends with all of Frisk's friends and they loved bring around each other. So one day they went to the park but sans didn't come. Papy said that sans wasn't feeling well. But they soon found out that sans turned into a giant Gaster Blaster thing and he saved (Y/N) and Frisk's life

The old bookstore wasn't your home anymore, you finally realized. It was with them. It was with him. (Sans (Undertale)/Reader. The story takes place in second person view. Reader is not Frisk!) (art is by @Elmer_Heiji on twitter)