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I have an Idea for an Undertale AU. And apparently, it's a good idea? So here, have a book. --- Long ago, two races ruled the earth. But when a plague of corruption swept through one species, causing a half of their population to attack the humans, the humans thought it safer to banish all the monsters underground. Now, the Underground is a Battleground. The battleground of the Pure and Corrupt armies. This Is UnderCorrupt. -- COMPLETED!

Princess Isabela Dmitria Luciana Vaduva of Acriania is well aware of how her story is supposed to go: stay closeted, become 'King Samuilu', marry a princess from another kingdom, and bring up an heir. Isabela finds the idea to be boring; she wishes for more excitement; unfortunately, her wish is received, but not in a good way. Isabela finds herself rapidly succumbing to the Black Death. And she knows there's only one cure. Becoming a vampire. She also knows if she accepts this said cure, there's no turning back. [This book is part of the "Project Unfinished" series. It can be read as a stand-alone, or in the order of the timeline.] Highest ranks: #2 in darkages - (7/22/23) #40 in romania - (7/22/23) #4 in theplague - (7/22/23) #2 in 1300s - (9/13/24) #1 in transwoman - (9/14/23) #1 in theblackdeath - (7/22/23) #4 in mtf - (9/5/23) #4 in transgirl - (7/3/24) #1 in transfemale - (2/26/25) #1 in transfem - (2/14/24) #373 in royal - (8/6/23) #18 in lesbian - (9/4/23) #2 in trans - (10/25/24) [Featured on FreeTheLGBT's paranormal reading list.] {Word Count: 20,000 - 30,000.}

This story is inspired by many other works and may bear some resemblance in certain places. However, I will endeavor to make this story it's own. 2 years ago monsters were released from the underground, ending their centuries-long imprisonment at the hands of ancient humans. Not a soul remains in the underground. But that doesn't mean no one's there. Be it chance or fate, The First Fallen will soon meet an all too curious human as he ventures into the deep beneath. The Reader or [Y/n] is male and Chara is female. I apologize if this bothers you it's just how I've always seen the character. Disclaimer: I don't own these Chara-cters nor do I own Undertale. This is just for fun. This story's rating is [M] for explicit language, violence, suggestive or sexual themes, and fantasy/fictional violence. My lovely reader @NightTheDemon1 told me that the artist of the cover is a Twitter user known as @A___IRAA. Thank you!

Alisa was only a little girl when she and her two canine friends fell into the Underground, only ten years old. Eight years past since she fell and the girl was glad she did. Her past could not get to her here and everyone was kind and accepting of her. She couldn't let them know of her secret though. They would hate her and hurt her and Alisa wouldn't be able to fight back. Word gets around eventually to the skeleton brothers and Sans gets curious. Who is this strange human and why were they different than the rest? Not wanting to go back to the surface? This is a story of friendship, family, and love. Though, magic has something to do with all of that though... SansxOC

"The only reason the tale of Monsters still exists is because of a girl." "This girl goes by the name of Lira. She's half Human and Half monster. Some say she's a curse. Some say she's a blessing, a descendent of those who have been unjustly banished." "Either way, she's still treated badly by those she lives with." Started: 9/6/2022 Completed: 11/27/2022

Hatred is like an infection, if left to fester it only spreads and becomes worse, until there is little to no hope of return. Frisk had abandoned her life on the surface, she had no expected to survive the fall, even less so make friends with the monsters rumoured to live under the mountain. So what happens when she leaves and is all alone once again... What happens if she listens to the flowers advice..... Book one of A different kind of end. I do not own Undertale, or the characters used, simply the story concept.

Written: May 10th, 2017--June 22nd, 2017 reposted from my AO3, anonemones; contains both part one and part two. After a year of living on the surface, monsters and humans have gotten along well, with (mostly) everyone adjusting to the many changes without much trouble. However, events take a strange turn when Sans and Papyrus--both of whom have been acting unlike themselves--go missing, supposedly without a trace. In their place are two monsters who go by the names of Wingdings and Aster, twins, claiming to be the lost Royal Scientist. Everyone is thrown for a loop, especially as nobody remembers a Wingdings or Aster--or, as they claim to be, "Dr. Gaster"--nor do they remember a Royal Scientist before Alphys. And with Sans and Papyrus missing, things don't look good for either of the boys. As their friends search for the missing skeletons, Wingdings and Aster work together to uncover what's happened while they were gone, as well as what might've caused everyone to forget them in the first place. But, trouble lurks within the shadows, as the Void closes in on them once again--refusing to let go of what belongs to it. And unfortunately, the Void is not the only thing after the boys' lives.

This is about an experience of an adventure loving girl named Ava who goes for an expedition with her friends towards the mysterious Sea of Cordelia. It was rumored that whoever goes there never comes back again. Their ship wrecked by a howling storm leading them to a new world, a new life which is completely different from their own lifes, a new journey and new story to begin which leads us towards some hidden horryfying mysteries. . . . . . . What could have happened to them? What is that hidden mystery of Cordelia? Where do the people disappear? What happened to them after they went to that unknown place, did they return? Does it changed their whole life? The world is so wide, is there really such places which connects us to a different world? . . . . . . . . . . . . . . .

The year is 201X, monsters who once roamed the surface have been banished again after 1 year, no more magic remains from the monsters, except for one child. Georgia Corona. WD Gaster's daughter is the only human with both a human and monster soul, as well as being the only human to teleport, summon bones, blasters and heal monster souls. Georgia is not an ordinary teenager, she doesn't spend time revising, but visiting the underground to see her father, helping him with scientific projects. As other teens would be partying, Georgia would be teaching herself how to control her powers when she's in danger to prevent anyone accidently getting hit by a bone or a Blaster. Georgia has normal, human flesh hands, apart from one minor detail... They have holes in them. One gift from her father is convincing full human hand looking gloves. She doesn't take them off. As the shy teen moves further into High School, people questioning her 'hands'. Would she crumble under pressure and reveal? Or turn dark to keep her secret hidden? (I do not own Undertale - Toby Fox does).

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