Lore
Episode 1: The Ancestral Rift
Long ago, spirits and humans shared the same world. Due to their superior wisdom, longevity and power, spirits were respected and worshipped by the little humans. However, as generations passed, humans became stronger and more intelligent, conquering the world and becoming independent. Spirits lost space and worship, becoming weaker and more timid. Human leaders met with the spirits, suggesting that they go to the nearest dimension, since spirits could access it, unlike humans. The spirit leaders took the proposal as an offense, starting a period of small conflicts between spirits and humans, which later became The Hundred Years' War.
With great effort, the spirits managed to create the so-called “flaws” between dimensions, allowing spirits banished to the other dimension to return or remain longer in this plane, under specific conditions. The Spiritual Resistance was commanded by the Cardinal Spirits: some of the most powerful among the spirits. The Cardinal Spirits were humanity's first guides and deities, and they would not accept being subjugated, even though they were no longer as powerful as they once were.
The Hundred Years' War ended with the defeat of the spirits, thanks to a sneaky alliance between humans, angels, and demons — who are also spirits, but who betrayed the Cardinal Spirits to become the only spirits in this dimension, monopolizing human worship —, who offered "better terms" than the ancestral spirits. The post-war world was a chaotic and destroyed place.
Surrendered, the spirits were officially banished to the nearest dimension: Alakia, where food is not as good as human soul energy, leaving their creations behind: the monsters, who by this time were already part of the world's ecosystem. In a show of good faith, it was determined that the immortal Cardinal Spirits would remain in the human world, acting as guardians to stop humans when their greed threatened the world again, and would not get involved with angels and demons. Many generations later, a new “flaw between dimensions” mysteriously erupted, making it possible for the ancestral spirits of each monster to access this plane. This soon became a problem, as these spirits began to emerge to seek revenge for their descendant monsters. It is common for the monsters to get out of control and attack cities and travelers.
Because of this, the Explorers Guild was formed: a global organization whose goal is to deal with the problems arising from the attacks of ancestral spirits, investigate and try to reverse the “flaw between dimensions”, which came to be called the Ancestral Rift.
The Rift also had an influence on the Cardinal Spirits, making them aggressive and insane.
Because of a prophecy that says Emperor Morocc will return from Muspelheim via Alakia, the Explorers' Guild investigates the possibility of the Ancestral Rift being part of a larger issue.