Board Thread:Questions and Answers/@comment-177.143.84.185-20160122220007/@comment-25121259-20160123004016

The said conflicts were the contents of the characters (CP) arcade stories (yes, the arcades in this series of games are actually part of the canon story, because of all the time-lines/alternative worlds/realities, continuum shifts, time-reversals and so on).

The more Izanami (by utilizing Takamagahara together with her own power) interfered by creating conflicts all over Ikaruga, the more Amaterasu had to intervene and use her power, thus getting closer to the world. Thanks to that, Amaterasu was close enough to the world to the point that by utilizing Sword of Izanami (Nu), who acted as the proxy of the Successor of the Azure, together with the Monolith and thousands upon thousands of sacrifices, they were able to drag the Master Unit unto the world.