Chapter Text
In this AU of Undertale, things are a little... switched up.
Long ago, two races ruled over the earth; Monsters and Humans.
Humans were the stronger of the two species, their stronger souls and immense determination giving them the power to kill a monster in one hit if they so pleased. But they didn't. They adored their kind monster neighbors.
But this power... Monster kind feared this power above all else. So, in an act of desperation, they declared war. They attacked the humans, driving them back. The humans, well aware of how strong they were in comparison to the monsters, refused to fight back for the monster kind's sake.
They would regret this decision forever.
The monsters chased the humans into Mt. Ebott and sealed them in with a magical spell cast by their seven strongest Boss Monsters. The humans could not escape.
When the humans were sealed underground, the monsters rejoiced. They could live carefree without fear. Because of this, they were filled with hope and determination, and over time, their souls and bodies became incredibly strong. They were made of more physical matter. But they kept their magical capabilities.
The humans, however, suffered great losses. They lost all hope. Most of the human population grew ill from the lack of sunlight and perished in the earth. The survivors adapted to their new environment, evolving to fit in it over the course of hundreds of years, losing the physicality they used to have. Their bodies became weaker, and they lost the determination they used to have, making their souls much weaker and attuned to their body.
But the determination didn't disappear. As all energy works, it cannot be destroyed. It simply dispersed into the air, only to be reabsorbed much later by the weak descendants of their much stronger ancestors. This absorbed determination gave the weak humans the ability to generate magical energy, which they use to this day.
When a human dies, they turn to 'stardust.' Their magic and determination are released as glittering specks while their bodies turn to a chalky powder, and their souls would shatter upon death.
Their bodies began to display the determination they had, giving their hair and clothing glittering stars that displayed what power they had. The humans found hope in this new look, wondering if that was what the real stars looked like.
But this new hope and power... it wasn't enough. The humans needed a strong leader after thousands of years without anyone to rule them.
After some time, they found the perfect rulers. Two humans with incredible amounts of absorbed determination and magic that they had absorbed from their late parents.
They were siblings. The sister, despite being younger, had more determination and magic, and thus was fated to be crowned the Queen of all Humans. Her older brother did not quite have as much determination and magic, and thus was simply crowned the prince. Three humans gave their lives for their new rulers, allowing the queen and prince to absorb their magic and determination. The queen absorbed the magic and determination of two humans while her brother absorbed the magic and determination of one human.
The underground was full of hope.
But over 2000 years later...
A skeleton monster named Sans fell into the underground.
This is his story.