Chara has one objective: RESET back to when they themself fell, and save Asriel from his demise. With all the Genocide Runs the now-free Frisk goes on for them, they're able to amass a big enough collection of SOULs to do exactly that. The only problem is, Asriel remembers everything that happened when he was Flowey. And he isn't too happy about it... In this new timeline, Kelsa, the SOUL of Bravery, falls into the Underground shortly after Frisk. Determined to save her only friend, Kel teams up with a mysterious flower with a face to find them and rescue them from Asriel's notorious freezing chambers. Betrayed by many, and uncertain who to trust, Kel finds herself in the midst of an iron-fist dictatorship, fighting to restore the Underground to the peaceful place it used to be. But... all is not as it seems, and there may be things about Frisk that Kel will wish she'd never discovered... Cover art by yours truly :3 This story takes place after the events of Underhappened. You may wish to read that first if you haven't already :D

Routine. The entirety of every living thing is dominated by it, human or monster. Everything HAS to be the same. It was in this that you were the exception. For you everything was new, every time line a detailed altered in order to satisfy your sadistic desire for a new ending, whether it be only a few details of dialogue altered or something else entirely. Monsters you once considered family you now butcher and slaughter without a second thought, after all, that's what the Reset is there for, right? And all at once it stops. Your small hold over the Underground is ripped away from you and you are thrown into a dying timeline, monsterkind's final attempt at self-preservation. You're alone, completely and utterly alone. Except one. And he has a bone to pick with you.

Reader insert. What if W.D Gaster didn't just get split between time and space, but actually ended up in your world in an abandoned hospital you called home? Your were a young child he decided to use as experiments to test human determination in said world and breaks physical laws to test human possibility? He knows of the powers you gained from his experiments... all but one, this one allows you to tear realities just enough to teleport into them. Knowing of Undertale you felt bad for the monsters stuck below in their world and wish to help them, but something goes wrong and you end up going to certain AUs and helping them, gaining the attention of some bad skeletons who now desire your power for them-selfish-selfs.

Remaster on my page - check it out! Sans has had an interesting past. A past that even his beloved brother barely even knows of. A past that he wishes could remain a secret. But when the questions start being asked, what does he do? These questions seem so little, yet they cause so much to happen. One little question. "Who is ??????" can change so much. A chain reaction from a single sentence can cause an entire world to crumble. Or maybe two. This is my first book so dont expect anything great. Inspirations: The "Better Times" trilogy by: @ANinnyMouse42 "Royal Blue" by: @dealialestine Started: 24th May 2021 Finished: 29th December 2021 A full 7 months of great fun with this book! Cover art by someone? I couldn't find the original owner :( Undertale by Toby Fox

Monsters get reborn after death. Reborn monsters don't remember their past memories. They either turn into a demon or an angel based on their psychological state. The more pure the monster, the more holy they are. Same thing for the other one. When they have more darkness and pain the monster has before death, they have more power as demons and their tails are longer. An angel and demon being together meant that the demon is tricking and manipulating the angel. Papyrus became an angel after being sliced by the human, and Sans turned into a demon for his soul was full of anger, hate, vengeance, and regret. Being reborn usually meant complete loss of memories. But Sans can remember everything. Clearly. He can remember his beloved brother, his "unique" spagetti, the horrible torture experiments by the doctor... EVERYTHING. So what happens if Sans meets with his brother once again? Will he do his unspoken job? Or will he silently watch and protect his sweet little angel? Try finding that out yourself. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ My First fanfic. I suck at descriptions. This is a mixture is RebornTale and Gaster Blaster AU, but with a few tweaks. Genocide reference included. This is just a small backup from the original source, AO3. Updates are faster in there, kinda.

THIS BOOK WILL STOP BEING UPDATED, BCZ I DECIDED TO REWRITE IT TO UNFUCK UP SKME THINGS. CHECK @luciluck-writing ON TUMBLR TO ACCES THE LINK TO THE NEW VERSION. An undertale fanfic with an Undertale AU of my own. This AU is called Luci's Underwitch, check my tumblr(@lucisunderwitch) for more info abt it. This is only part one, I decided to make part two in another book since uhh... This one's a little bit dark and the other is going to be more fun. Warning/TW: This fanfic may contain depictions of self harm, self hate, themes about depresion, mention of suicide(i will mention before each chapter if that part has any of those things, not the whole book will be dark like that); it may and will contain Undertale/Deltarune spoilers aaand a bunch swearings. After Frisk decided that they shouldn't have gone back to their family instead of staying with the Dremurr family, they decide it's time to head back to the underground, to help with moving. This ended up saving their life and mental health, yet other problems remain to be doscovered.

(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.

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

W.D.Gaster,the previous Royal Scientist,has been traped in the void all this time.However when he learns of Frisk and the destruction of the barrier,he knows he needs to help his fellow monsters survive mankind's judgement.But how? However,despite all odds,Gaster obtains something that may allow him to help save both humans and monsters,not only from themselves but from something else... Gaster got a hold of a Grey Human Soul.... Note:This will be a fanfic about the True pacifist ending of undertale.However,some characters will either be my OC or OCs by others who I will credit.All other rights of the characters go to the creator of the game,Toby Fox.Also this will contain major spoilers for the game so don't read if you do not wish to be spoiled.And lastly,a lot of the content is my personal headcanon,like the genders of the fallen children,so do not take what is said here as confirmed by the game. Now that we got that out of the way,i hope You Will enjoy this story and have fun while reading it!

(ORIGINAL Version. Not revised) No one ever expected for the timelines to cross, that is, until there were two of them. The lovable and friendly Frisk, and the evil killer, Chara. With an experiment gone wrong, and a strong connection between the two boys, can Frisk and his friends change Chara's view of monsters?