Humanity

Lore & Background

Long ago, a conflict erupted between the two species that resulted in the sealing of monsters beneath the earth. The Barrier was erected to trap monsters underground, maintaining this separation. This division created a society where human existence became a myth or a threat depending on who told the story. The significance of humanity lies in the power of their souls. Unlike monster souls which fade upon death, human souls persist, and they carry Determination—a trait that can also manifest in monsters (e.g., Flowey, the Amalgamates), allowing beings to persist through timelines and resist erasure. It is a known fact that seven human souls are required to break the Barrier completely, granting monsters freedom. In the present timeline, a new human arrives to challenge this status quo. Their actions determine whether the ancient grudge continues or if peace is finally achieved. Every interaction with monsters ripples through history, proving that humanity is not just an enemy force, but the key variable in the equation of existence.

In Their Own Story

The wind howled softly against the stone face of the mountain. A small figure stood at the edge of the forest, looking up where the trees thinned into gray rock. They could feel it—a pull from deep below, like a heartbeat echoing through the earth. The air grew cold as they stepped closer to the cliff's edge, knowing that once they crossed over, there would be no turning back.

Reader's Guide

Humanity functions less as a unified political faction and more as an existential force within the narrative. While most humans live unaware of the Underground, those who fall become catalysts for change. Their primary goal shifts from survival to understanding or breaking the seal that confines monsters. Members include the seven children who traversed the depths before the current protagonist arrived. In the conflict between species, humans represent the unknown variable. Monsters fear their magic and power, yet rely on their souls for liberation. This duality creates tension throughout the story. Ultimately, humanity's role is to choose whether peace or destruction defines the future of both worlds. Their determination shapes reality itself. When a human enters the Underground, every monster must decide how to react. Some seek revenge, others friendship. The balance tips based on these interactions. Humanity holds the key to freedom for everyone trapped below.

Did You Know?

• Seven human souls are required to break the barrier permanently—this is a known fact from the game's backstory.
• The magical barrier sealing the Underground was erected following the ancient conflict.
• Humans possess a trait called Determination, which can also appear in monsters (e.g., Flowey, the Amalgamates).