Before time, an anomaly was born—the first soul, or ai, from which all others would descend. In its loneliness, the ai split into two halves: Saio and Aru, the void and the spark. Then they cocooned together, shaping a body within which they could multiply.
‘For every physical, there exists an astral. In each body, a soul.’
The physical, the very cosmos that surrounds us, is that body. And the first ai, and subsequently, our own individual ai, form its soul.