Imaginary Number District

The Imaginary Number District (虚数学区) is another plane of existence that exists within Academy City, created by the mass of AIM fields emitting from the thousands of espers within Academy City's walls. This plane houses Kazakiri Hyouka, an "artifical angel" also created by the mixing of AIM fields, when she is not physically present. This realm, which exists outside of our own, is not viewable or detectable by ordinary humans as they cannot feel or see AIM. Those within this plane of existence are able to view ordinary people outside of the realm but cannot interact with them in any way, whether it be through touch or talking. This realm has been said to be key in Aleister's plans to create an "Artificial Heaven", or a gigantic mass of AIM fields, that extends throughout the entire world.