Equal Exchange (End)
Abhorred Alluvium was a term given to the unexplored areas of the Demon Realm. In the same way that alluviums came to exist because water left the earth, Abhorred Alluvium came to exist because Ragnarök swept it over and left it barren of souls. A lot of valuable items were left behind, yet only a handful of people dared to retrieve them. The land contained a lot of opportunities but also danger.
The Great Reset happened because of Ragnarök, the clash between the Great Demons and the Ancient Gods. Ragnarök had been initially planned to be the end of the Demons, but the Ancient Gods underestimated the Great Demons and the sheer madness of the Demons. They had managed to kill all of the Great Demons, but they also had to perish.