A world ruled by judgement, mafias, and violence. Y/N wants nothing more than a simple life, even though she was born as the daughter of a higher class. She has a secret that when revealed, suddenly shakes the whole world as they know it. Her soulmate is a monster. Grillby is a man of neutrality and routine. He knows nothing more than taking care of the family business. He tried to ignore the feeling for years, that his soulmate had been out there. Now, seeing her right in front of him, it is impossible to ignore. Hi, it's Writer~San aka OreoDaSkeleton! Undertale and it's aus, characters, and fanart do not belong to me. However, this story is genuine and 100% mine! Thanks for checking it out! -w-

Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful, absolutely innocent skeleton, smiling despite any given situation. However, Y/N finds out that Blue's wearing a different attitude outside of work. He's exhausted and working himself to the bone, using all he earns to pay for countless medical treatments and bills. He claims that they aren't for him, but keeps silent and won't give more details. Who's bills is Sans paying for and could Y/N find a way to help? **WARNING- Small Depressive episodes will be presented in this book. Read at your own consent.** Hello! It's Writer~San! None of the art/undertale au is mine, but the writing 100% is! Enjoy!!!

Y/N's been traded and sold her entire life. She's learned firsthand that if you don't obey your master, you get hurt. If you force yourself to listen, you live another day. Monster trafficking is a popular thing down in this chaotic place. That's all she's ever known. Obey. Get a new master. Repeat. ... So why are these two so different? Hello, it's Writer~San!!!! Thanks for checking this story out. Just as a disclaimer, any art/undertale au presented is not mine! However, the story definitely is so enjoy!!!

The war between the two guardian rulers and their kingdoms lasted for countless generations. Then came the news that Nightmare went ahead and got himself some new "friends".. Dream's soldiers were easily overpowered. Battles were being lost and the shadows began to completely overpower the sunlight's rays. With the scale of life's balance beginning to tip, Dream needed a quick solution.. The King needed a Queen. The arranged marriage would spread positivity and hope throughout his entire kingdom. Maybe, just maybe, it would give them the boost they needed to defeat Nightmare once and for all. Hi, it's Writer~San aka OreoDaSkeleton! Undertale and it's aus, characters, and fanart do not belong to me. However, this story is genuine and 100% mine! Thanks for checking it out! -w-

Want to talk about falling into the wrong place at the wrong time? Y/N definitely scored big time on that one. One moment she's falling, the next she finds herself trapped underground with a monster that wiped out his own kind. He's a cold-blooded killer that never shows any emotion. Though, as time passes, she finds out that Sans isn't as heartless as he plays himself to be. Hello! Writer~San here! Cover art and Undertale AU/Characters aren't mine, but the story definitely is. I hope you enjoy it!!!!

Y/N's best friend Blueberry (also known as Underswap Sans) invited them to move into the shared/connected apartment next door. They could hang out all the time! It's an awesome opportunity and the chances of it happening again are slim. Being closer to friends means a lot, especially in this tough life on the surface. Blue has introduced Y/N to other Sanses before, and they've never had any issues with them. Even so, what happens when they find out that Blueberry now has a very creepy one as a roommate? His cracked-open skull and unclear motives for being here are a major concern. Still, it's not as freaky as the stranger's ghostly appearances and obnoxious actions. Blue says "he's just misunderstood." Should Y/N follow their conscience, warn Blue and run? Or listen to Blueberry's optimistic advice, and befriend their new neighbor? Hello! owo ... Undertale aus and art presented in this book are not mine. However, the story is 100% my work! I hope you enjoy it!

Gaster is the current royal scientist, set with a mission to break the barrier and free monster-kind from their underground prison. His loyalty and persistence to the task is clear, since he'll make whatever sacrifice necessary to complete it. However, even a perfectionist can be blind to some of their own flaws. Gaster has a habit of pushing things or himself too far. An accident occurs in the lab. Whilst trying to save him; one of his lab assistants, Y/N, gets injured. Burdening himself with even more pressure and guilt to fix it, Gaster thinks that doing all of her work for her will cover up the incident. Still, the sad reality is that the damage can't be undone. Well, Gaster ends up spending more and more time with her. As a result, both of them gain an entirely new perspective of the other, they aren't just another monster in a lab coat anymore. Hey! It's Oreo aka Writer~San! Undertale, it's characters, and it's fanart do not belong to me. However, the story does!!! I hope you enjoy it! (^w^)~

Hi guys! First of all I should mention that the story pic isn't mine and of course Fellswap belongs to its original creator. A young hiker, Y/N gets lost and accidentally falls into a pit while stumbling in the dark. She wakes up to find herself in a whole new world that was never spoken of before except in children's stories. That's when she stumbles upon Barb (aka Mutt) and makes her first friend in the underground! But other monsters that live here aren't so welcoming.

It's only been a few years since monsters have been released from their underground prison. In some towns, monsters are welcomed with open arms. Others? Not so much. Y/N is a 22 year old girl that lives a pretty simple life. Sleep, eat, work, relax at her daily cafe, go home, sleep. Then the routine starts again. However, her routine is thrown off when she keeps running into a skeleton, supposedly named Sans. She would like to get to know him more herself, but there's one problem.. He doesn't talk. Of course, Undertale belongs to Toby Fox, not me lol