Undertale: Darkness Within
WindriderX99
  • Reads 1,553
  • Votes 98
  • Parts 22
  • Time 2h 59m
  • Reads 1,553
  • Votes 98
  • Parts 22
  • Time 2h 59m
WindriderX99
Complete, First published Oct 26, 2016
Mature
alphysasgoredarknessfransfriskfriskundertalefriskxsansmettatonpapyruspapyrusundertaleromancesanssansundertalesansxfrisktorielundertaleundertaleauwattys2017within
6 years has passed since Frisk freed everyone from the underground. Nightmares have been plaguing Sans again and new threats begin to arise for the group again. Join Sans, Frisk and the others as they battle against their enemies, and figure out life on the surface isn't what they thought it would be.
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alphysasgoredarknessfransfriskfriskundertalefriskxsansmettatonpapyruspapyrusundertaleromancesanssansundertalesansxfrisktorielundertaleundertaleauwattys2017within
Table of contents

22 parts

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Under Infusion Tale- (An Undertale Fanfiction Novel) by Serena_Walken
25 parts Complete
(Complete) Monsters may be free, but there is a high price to pay for the one that freed them. Deciding Frisk is better off being a mystery, the monsters leave it alone for 14 years. Until Frisk is discovered. Undyne and Sans try to reach her in time, but she is left with a fatal wound. With even boss monsters unable to heal her, Sans heals her the only way left. However, that was part of Gaster's plan . . . but Flowey was not. The result is wedding bells ringing twice for Frisk. Once to Asriel . . . and once to Sans? *Frisk and Sans eventually.
THE RETURNING LOVE(CHAPTER 2) by AmazingBooigi
42 parts Complete
"I will be back soon frisk, it's a promise" The last word sans said to frisk before going to Europe. For six years they all live separately, and then after six years sans and papyrus decided to go back to Hometown(the city). Finally they're going to meet, again, but then a long enemy show up and they both in danger.. Find out more on the sequel of the first chapter *DISCLAIMER*make sure that you already read the first chapter.. So you will understand the lore of the story Undertale belongs to Toby fox. It's not my property
Tomodachitale by Jadegirl224
29 parts Complete
An Undertale AU where monsters are still currently trapped underground. It's been 6 months since Frisk has befriended everyone. Omega Flowey never existed, for what reason? Frisk isn't sure yet but they intend to find out. Alphys is worrying to find a way to break the barrier with the human souls they currently have. Frisk stays with Sans and Papyrus often though they live at the capital with their adoptive parents Asgore and Toriel. They've started to get used to life in the Underground when another human drops in....
Sacrifices (Undertale FanFic) [COMPLETED] by Brynwyth
34 parts Complete
Frisk has freed the monsters of the Underground. Finally, monster kind is allowed to return to the surface. It's been 3 years since then. Yet the monsters still struggle to find their place within the world. Most accept the monsters, but there are those who wish nothing more than the complete annihilation of monster kind. Merely sealing them away is not enough. As ambassador for the monsters, it is Frisk's responsibility to fight for everyone's right to live on the surface. But at the same time, an internal battle rages on within her. Not only that, her relationship with Sans is strained. Trust is not so easily regained after the slaughter of one's beloved, despite it all being erased. Or was it really? The memories are still there. *I have lost interest to complete pre story and post story parts. Please enjoy the main story and the extra tidbits.* Chinese Version: http://fav.me/db7h2kg DISCLAIMER: I do not own Undertale. TobyFox is the creator and owner. Cover art does not belong to me. I only edited it. Photo was found off Pinterest. If anyone knows the original artist, please let me know! I'd like to give them credit.
Where do u think u're goin'? Yandere! Undertale Characters x AnyGender! Reader by Pandy999
105 parts Complete Mature
The story takes place after Frisk sets free all the monsters in the Underground. After that, everyone was happy until...something horrible happened...
Undertale : Secrets (REMASTERED) by ItIsComic
31 parts Ongoing
Sans has had an interesting past. A past that even his beloved brother barely even knows of. A past that, despite being so long ago, always finds a way to bite back. A past that defines who he is - but he longs to erase. A past that doesn't let go, it clings to him despite his endless attempts to escape. And when someone finally attempts to uncover the veil, and fails in the process, what happens next? This book is a complete remake of the original Undertale: Secrets that was made nearly 3 years ago. By remake, I mean that this book takes the general plot of Secrets and basically "tries again". This will reuse elements of the original and cut out the parts I don't like while adding my own new ideas, effectively creating a new book. Whether you liked the original or didn't even read it, I hope you like this!! Inspirations: The "Better Times" trilogy by: @ANinnyMouse42 "Royal Blue" by: @dealialestine Started: 17 March 2024 Finished: Not yet! Undertale by Toby Fox
Colors | Chara x Papyrus by NoellaBerry
13 parts Complete
~~~ [COMPLETE] After being set free from Frisk, Chara finds herself shoved into a new life that she didn't ask for. She's cold and distant for days, void of a SOUL and seemingly proper emotions. However, there's a certain somebone who refuses to tolerate it anymore. Unlike her, he's kind and unfortunately, always around. When Chara finds herself dealing with unrecognizable feelings, he knows just how to help her. ~~~
Evertale by RoNinja8215
22 parts Complete Mature
Its been 20 Years since Frisk freed everyone. Sans and Frisk fall in love, Mettaton and Papyrus do as well, and they all have kids. But a problem arises... with Monster Racists, and Reality being Torn Apart, a lot happens in this thrilling story. 18092 words.
Memories - (Sans x Frisk) by BatBanana
22 parts Complete
"I feel that I'm living in a dream right now, and any moment I'll wake up and find myself back in another nightmare." I say, eventually. "Welp, if you ever do, just remember, dreams can come true," he tells me, bringing my face closer to his. - Chapter 7 The reset button. Just the word is enough to give Frisk nightmares. Temptation grows strong inside her, but if she were to disappear, would everyone else be saved from the peril that a reset brings? Cover art done by me, and I do NOT own all of the characters in this story. Undertale belongs to Toby Fox, but some of the characters in this story belong to me.
Again || Sans x Frisk by soonbokkie
14 parts Complete
✿ ❝Even if you go far away, I'll be by your side.❞ ✿ ✿ ❝遠くに行っても私はあなたのそばにいます。❞ ✿ ╔══════ ♥ ══════╗ Four years have passed ever since the last 'reset' . Monsters and Humans finally lived together in harmony. But was it best for the monsters to have left the underground for the surface? Was it really worth the encounter that they must overcome? ╚══════ ♥ ══════╝ // DISCLAIMER: I do not own undertale or any undertale characters from this story, it is rightfully owned be Toby Fox ━━━━━━━━━━━━━━━ This book has ended, so sorry... CURRENTLY EDITING EVERY CHAPTER chapters with a "✿" means it was already edited and rewritten in a better version Please don't read this shit :')
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Slide 1 of 10
Under Infusion Tale- (An Undertale Fanfiction Novel) cover
THE RETURNING LOVE(CHAPTER 2) cover
Tomodachitale cover
Sacrifices (Undertale FanFic) [COMPLETED] cover
Where do u think u're goin'? Yandere! Undertale Characters x AnyGender! Reader cover
Undertale : Secrets (REMASTERED) cover
Colors | Chara x Papyrus cover
Evertale cover
Memories - (Sans x Frisk) cover
Again || Sans x Frisk cover

Under Infusion Tale- (An Undertale Fanfiction Novel)

25 parts Complete

(Complete) Monsters may be free, but there is a high price to pay for the one that freed them. Deciding Frisk is better off being a mystery, the monsters leave it alone for 14 years. Until Frisk is discovered. Undyne and Sans try to reach her in time, but she is left with a fatal wound. With even boss monsters unable to heal her, Sans heals her the only way left. However, that was part of Gaster's plan . . . but Flowey was not. The result is wedding bells ringing twice for Frisk. Once to Asriel . . . and once to Sans? *Frisk and Sans eventually.

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