The world, which in this context refers to the universe or reality itself, as it is normally perceived is not pure and untouched - various layers known as Phases exist over it which act like filters, affecting how it appears. The various religions which have arisen throughout human history have had the effect of creating layers over the world.
Beyond these Phases is the Pure World, which is described as a world of science (科学世界, Kagaku Sekai), untouched and unaffected by religion.
Aiwass, not originating from any religious category and subsequently the phases of magic, is described as the angel of the bottommost layer, closest to the world of pure physical laws, and as such, is at the core of Aleister Crowley's plan to eliminate the phases by establishing a means of controlling him and using his power to destroy the other filters above him, leaving only a magicless world.
At some point in the past, Aleister Crowley began attempts to directly interfere with the Pure World.
Magic God Othinus Arc
- Main article: Magic God Othinus Arc
- Shinyaku Toaru Majutsu no Index Light Novel Volume 09 Between the Connected Points
- Shinyaku Toaru Majutsu no Index Light Novel Volume 18 Chapter 4 Part 5