Soul
Souls are essential for living things, acting as a “battery” of sorts. The souls of sentient beings are complex and divinely crafted. Orran'sulani was the god originally responsible for the soul forge and this duty passed to Idraen. A melange of mana, ki, and other celestial energies are combined to create a basic soul. The majority of souls in Aserra were crafted by Orran'sulani and Idraen, but some may have origins on other worlds
Animals and plants have a spiritual essence formed of mana, but more complex beings have souls that were forged by the gods from mana and other energies.
Reincarnation
All forms of souls and spiritual essences reincarnate, essentially recycling the energy. In the case of the least complex beings, plants and insects, the mana that exists in them returns to the earth and is sent forth in their seeds eggs to fuel the next generation. For animals, their spiritual essences can condense into true, though simplistic, souls which are reincarnated directly into the next generation after death. When it comes to the sentient races, however, their souls are tended to by the gods in cycles of rebirth.