Disclaimer: I do not own Undertale or any characters associated with it.

Important note: This story will have spoilers for all three routes, and if you haven't played Undertale, I advise that you do so before reading.

Prologue

Long ago, two races ruled the earth: Monsters and Humans. For a while, the two lived in harmony, however, the peace would not last. Humans and Monsters were different, far more so than you might think. Monsters are magical beings, filled with a strange magic that few humans understand, and even fewer can control, while humans are physical beings, easily beating any monster in a fight. However, it is said that if a monster absorbs a human soul, then they will become more powerful than any human. It is not known what would happen if a human absorbs a monster soul, as few monster souls persist after death.

Fearing for their lives, despite their far greater strength, the humans declared war on the monsters. The war lasted for many years, and soon, the monsters were beaten. The humans sealed the monsters away, using 7 of the world's most powerful magicians to create a barrier which no monster could cross. Many years later, a child fell into the Underground. Many days later, the child was found, dead…and in the arms of a monster.

"boo!"

I yelped in surprise, dropping the book as I jumped to my feet, earning a giggle from the girl who scared me. She had medium length brown hair, brown eyes, and wore a magenta striped shirt, with blue pants and brown shoes.

"Frisk! Don't scare me like that!" I replied, brushing off the dirt that had collected on my red pants "what if I had fallen in? you know the legends about this place"

"I know, I know" she responded "'it is said that those who travel up mount Ebott never return'. And yet, here you are, on top of Mount Ebott, reading about…monsters?"

"this is the only place I can be alone" I responded, picking up the book and making sure it wasn't damaged "and it's a history book, by the way, it's about the war between humans and monsters"

"the war which everyone seems to have gotten over except you" she replied "most kids don't spend their time pouring over books about a species that is a legend to most"

"most kids don't have to deal with a girl who seems to always get herself into trouble somehow" I retorted.

"hey! I don't always get into trouble! And it's almost never my fault!" she crossed her arms

"whatever you say" I opened the book, only to have her snatch it out of my hands "hey! Give it back!" I jumped up, reaching for the book

"not until you take back what you said!" she responded, backing up so I couldn't get it. I was stronger than her, but she was smarter, and knew that I wouldn't be able to get the book if I couldn't catch her.

"what? The fact that you get yourself into trouble?" she nodded in response "well, maybe I shouldn't have said that, but you know it's true! Heck, you're about to back up into the huge hole behind you!"

"what are you talking a-ah!" her words were cut off as she slipped, the book flying through the air and landing a bit away. I quickly rushed over to grab her arm before she fell, I barely managing to catch her.

"see, this is exactly what I was talking about!" I yelled. Though she weighed less than an average 10 year old should, she was still considerably heavy, and it was hard to keep my grip.

"I get it, I get it, just pull me up before-" the rest of her sentence was lost as what little ground I was on crumbled, sending us both falling into the pit, screaming our lungs out.

Then, the world went black.

Hi everyone! So, a while back, I attempted to write an Undertale fan fiction, and it didn't quite go as I hoped it would…but, inspired by a story I recently found, I'm going to attempt to write it again, this time, hopefully making it better! I hope you all enjoy reading!

Now, as in my previous attempt, I'd like to remind everyone reading that Undertale is a game with many secrets, and many, MANY, plot points that are worth experiencing for yourself. Though I've altered the story a bit, and will continue to do so later, there will still be a lot of spoilers for the game, and you should definitely play every or any of the three routes you plan to play before continuing.

Also note that Chara and Frisk will be female, Alex, who has yet to be introduced by name due to first person writing, is male. Remember: I love criticism, reviews encourage me, and I'm open to input. Bye for now!