The majority of events throughout the story take place on Organica. Two millennia before the present day, Minera was in a state of war with itself, and Organica's inhabitants were used by the Minerans as a food source for organic weapons called xeroms. The xeroms were designed to attack Spiria, the crystalline essence of a person's emotions, and either destroy or infect them with an ailment known as despir. Some Minerans who sympathized with the Organicans' plight and wished for peace provided them with weapons to fight off the xerom, called Soma.