It is only because the Erro live in such an impossibly inaccessible part of the world that they have survived to present day Extremus Terra. Making their home only on the huge southern island of Serenity Isle, the Erro live their entire lives there and disdain to ever leave it for the mainland of Extremus Terra. Although the planet would benefit from their widespread proliferation, the Erro live their lives on a firmly "un-human" belief: that everyone should completely disarm and the world should always be at peace. And although even the Patientia would give anything to be able to support the Erro's sadly mistaken belief, they know that the species that is human is completely incapable of doing such a thing, and that trying to be the first to proliferate such an idea would be a death sentence.

The Erro neglect to recognize that nothing in humanity can be viewed in a vacuum, that as much as it would benefit all humans to put down their arms, other things, like religions, greed, and prejudices, are also unfortunate realities in the world. If ever there was a belief to be had, world peace would be it, but until it is shared by everyone, in this world of humans, disarming is simply taken as an invite for someone else to attack you.