Title: Forgotten Promises

Author: dem bones

Genres: Sci-fi/Fantasy

Pairings: Sans/Toriel, Alphys/Undyne, Sans/Frisk, Papyrus/Frisk, Gaster/OFC, one-sided Sans/Chara

Summary: For the first time after the war, a human comes to visit the world of monsters. That's when Sans first sees Chara. Six more humans fall. When the eighth human falls, the underground grows hopeful however the human won't go down without a fight.

Warnings: Slowburn romance, Character centric, OCs that are actually NPCS, OCs, Spoilers for the genocide, neutral runs and pacifist runs, slash, femmeslash, major character death, child abuse, major violence, torture and monster/human relationships, suicidal themes

Disclaimer: I don't own Undertale.

Chapter 1: The Orphan

For as long as Chara could remember the kids in the town often spoke of a mysterious mountain that was said to house many monsters. People feared the monsters would attack them and if provoked it would be the start of a never ending war.

Chara was raised in an orphanage. He had parents, once. They had left him with that old rusted bronze heart locket.

He had been told his parents had been good people once. Descendants of those who possessed the ability to use magic.

Rumor had it that there was once seven wizards who worked for the king of the island.

Humans had learned to harness the ability but it came with a big sacrifice. Using magic came at a big price often costing a human their soul. His parents had died in a massive explosion trying to save his life. They didn't say more on the subject so it was a complete mystery on what they had been trying to save him from.

Chara loathed every day he was alive having to live with his parent's sacrifice. He hadn't made very many friends in the orphanage.

He had shared a room with another child. Kenny was his name. He had smiled upon meeting Chara.

"Hello," He said.

Chara smiled. It was what he had been told to do when he was greeted by a stranger.

Kenny had unpacked his suitcase moving his clothes into the drawer by the bunk beds. The room had plenty of space. It had enough room to house many bunk beds.

"What's this?"

Kenny took out a knife with a sharp blade that had a shiny silvery sheen.

"That's mine," Chara snapped.

Kenny's eyes widened and dropped the knife in fright jumping away just in time as the blade landed on the floor.

Chara growled.

"That thing that you have. It's a knife isn't it? I thought those weren't allowed at the Orphanage?"

Chara smiled.

"Are you going to tell on me?"

Kenny's face heated up.

Chara crept closer to him.

"No, I-"

Kenny flinched as Chara stood in front of him.

He knelt down and picked up the knife off the floor. Chara held the knife up to the light.

"At least it isn't scratched or someone would have gotten hurt."

Chara put the knife down and glanced at Kenny.

Kenny shuddered.

"Why are you looking at me like that? It's creepy."

The next evening, the keeper of the orphanage had dropped by their room and extracted the knife.

That afternoon Kenny had been talking with some other boys. They glanced at Chara with wide restless eyes whispering amongst themselves so softly that he couldn't hear.

"Who is that boy and why is he looking at us funny?"

"I don't want to know. He's creepy. You know he tried to sneak a knife into his room."

"A knife. What if he tries to kill someone?"

It was that evening that they had all gathered around in a room full of toys. The keeper of the orphanage had sat in a large oak rocking chair with a small book in her hand.

"So what are we reading, miss?"

"The title is 'The Legend of Mount Ebott' by Roil Tullet.'"

"That's a strange name."

"It's a pseudonym."

"What's a pseudonym?" Kenny asked.

"It's like a pen name."

"I see."

Upon opening the book, she began to read.

"Long ago there was legends of a secret entrance leading to the cave of monster hidden on Mount Ebott. It was told that one time monsters and humans had once coexisted. The monsters had taught humans how to use magic and humans had taught monsters how to be kind to one another. One of the humans had fallen ill while playing with the monsters. This human was friends with a monster who was determined to find an antidote for their friend enduring encounters with ruthless dragons and powerful wizards."

Chara's ears perked up, intrigued by the tale.

"Upon returning with the antidote however the monster tried to wake the human finding his body cold to the touch. The wounds the monster had sustained from obtaining the antidote had taken it's toll on the monster and his body melted. Humans had gone on thinking that their child had killed the monster out of self defence and had perceived their child's death as an attack from the monsters. None of the humans had ever discovered how the child or the monster had died though every time there is an earthquake some say that they can hear the monster moaning that human's name."

By the time she was finished reading most of the children had fallen asleep accept Chara whose eyes seemed very intent and focused.

"You seemed to be very interested in that story, Chara."

"Is it true?"

"You know as well as I do that it's just a fairy tale."

"It can't be a fairy tale. Mount Ebott is just outside this village. I mean why did the villagers seal up that cave."

She chuckled.

"Fear. Often people tend to fear things that they don't understand or things that don't exist."

'No,' Chara thought. 'They were afraid of the monsters because they could have killed them.'

It was days later that the keeper of the orphanage had brought them outside to play at the park. The park was quite vast full of green grass and shrubbery. The only evidence of color was the vibrant golden flowers that Chara had the habit of stomping on. Mount Ebott was a large mountain but there was a path that had lead up the mountain.

All of them were blocked off by caution tape and barbed wire fence. Such things would have blocked any one who didn't have an ounce of determination.

Most of the kids at the park were minding their business. Kenny was the favorite of the woman who tended to them. He had asked her to play hide and seek with him.

Just as they were going to start playing, it was beginning to rain.

"Come along everyone. We gotta head back inside."

Chara couldn't hear as he had already snuck under the taped path.

It was raining quickly and he was getting soaked. He had to find cover and quick.

He treaded up the rocky trail before spotting a dark cave.

Cautiously Chara stepped inside. On the rocky ground were some green vines that lead further in the cave. As Chara stepped deeper in the cave, he spotted the large hole that stood near the end of the cave.

His foot caught on one of the vines and he fell forward into the large hole. He felt a blinding pain at the back of his skull before everything went black.