Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital.

in a world of monsters and humans trying to make peace the sins of humanity started to gather more and more untill they made a new soul a soul that is derived of the 7 deadly sins

(This is a remake of the original What if) Down into the dark, Chara fell. Down into the dark, an experiment was run. What if she got to go home? But what if it wasn't to the world as she knew it? What if she was placed into another, at another time? What if that happened to be a version of Underfell?

Mendertale AU. Gaster spends his first night out of the Void. Art trade done with Taleea on Deviantart.

In the midst of getting to know him better, Sans suggests Frisk's mother dates him once or twice to see if their mutual distrust and general dislike toward each other lessens. She accepts, though he then starts demanding more. [Cover Image Credit: 愚木混株CDD20 on Pixabay.]

the next arc of begins!

You are dropped into the underground world, home to many monsters when a very voluptuous goat mom approaches you and takes you in. There are many mysteries centered around you. It is up to you if you wish to uncover them. This thicc monster lady would like to help, but she wants quite a bit from you. Will you be able to satisfy her overwhelming needs like her husband? Could what yo

Lol back on this stupidity. [Charas will be referred to as he/they unless stated otherwise]

With a quick use of Sans' magic, we had returned to our home on the surface. The lovely three-story home sat quietly among the trees under the moonlight. Sans always loved to teleport just outside the door and glance at it before walking in. He was a little less lazy since coming to the surface. So much to learn. So much to do. So much to love. SEQUEL TO "TWO WORLDS, TWO SOULS"

A single choice has a huge impact. Not just on one person's life, but on everyone around them. In the Underground, there are many paths one can take. But when Frisk makes a choice that takes them off all the known paths, the world is changed forever, and Frisk becomes intrinsic to the fate of not just Monsters, but the whole world.

Y/N is a 'normal' high school student who is close friends with F/N, loves to play the violin, and has special information that she's been interested in just for fun. However, one evening, when Y/N and F/N were hanging out, a portal suddenly opens and they get transported into another universe. What will happen to them? What universe did they traveled to? What's this 'special info?

The monsters fell asleep on a calm day, and suddenly they found themselves on a strange world? Will they get out of there or get stuck forever on that world?

(THIS IS VERY AU BASED. ASGORE / TORIEL ARE TOGETHER AND ASRIEL IS ALIVE. CW OF ABUSE / CHILD ABUSE, TRAUMA, AND DARK THEMES ARE PRESENT) It's almost been a decade since the war of the humans and the monsters had ended. Centuries of conflict have left the Underground in a state of repair and despair. Although it's going to get a lot more interesting when a soul of Bravery falls.

Frisk may have still fell into the underground, but this time, so did their brother. Their brother is the more determined one in the family. However, Sans still thinks Frisk can reset. This has major consequences for the underground, as the true anomaly is looking for their family member.

Frisk and Chara. Two unique individuals. At least, that's what they though. Until they had to share a body. Weird, I know. The characters belong to Toby Fox, and no, I don't ship Frisk and Sans.

"W-why are you doing this?" The human said as she tried to get out of the grip of the prince's bloody hands. "I felt so alone, so scared, I thought I would never meet someone like you... who would make me feel better, who would be the only thing I desired the most, why would I let you go? You promised you wouldn't abandon me like Frisk, remember?..."

THE RESCUE ARC COMES TO A CLOSE

"The little girl just could not sleep because her thoughts were way too deep, her mind had gone out for a stroll and fallen down the rabbit hole." - A life of fear is not what Frisk ever expected to have. - Warning: this is a dark AU that tackles mature themes and is not recommended for sensitive readers.

Realizing how close the monsters are to gathering the 7th soul, and destroying humanity, Frisk decides to take matters into their own hands.

Frisk regrets their genocide, but after trying to make it right, realize they can't, so they do the only thing they can think of: ask Sans for help. One-Shot

Born into a life of cruel subjugation and confinement, a young child discovers that a different kind of prison might just become her safe haven. But nothing is ever that simple. With a deadline looming and troubles starting to pile up, a new friend with a lazy grin could be just what she needs right now. Multiple AU's. Slow burn. Female Frisk. Contains OC's. Eventual SansxFrisk

DIRECT SEQUEL TO "PATCHWORK SOUL" — A few months later. A family of monsters and their little human kid try to start life anew beyond the confines of a giant mountain. Maybe they find something. Maybe they lose something. Time flows ever onwards, but sometimes it goes sideways, and it's heavier than they thought.

Sequel to To SAVE a Demon (Slow updates)

A household full of skeletons are competing over the attentions of one love. This isnt that house though. Unknown to the group secretively wrestling with their unpredictable love lives and universe-meddling machine, another house a few doors down has been gifted with its own skeleton posse clamoring for the attentions of their own little lady. A little old lady by the name of Mabel

Mi nacimiento fue la causa de aquella ruptura, la traición infligida la hizo más grande. Los universos alternos colapsan. El tiempo termina, los seres inmortales mueren. El destino se ha sellado. El equilibrio esta roto. ¿Qué es lo que debería hacer? Ser el sacrificio, eso es obvio. Y sin embargo, "El destino es un hijo de puta." Murmuré, mientras trataba de seguir cuerdo. [Yaoi]