Azure

The Azure (蒼 Ao), also known as the Azure Flamed Grimoire (蒼炎の書, Sōen no Sho) and the true BlazBlue (ブレイブルー, BureiBurū), is a mysterious power that lies at the deepest part of the Boundary and has the ability to grant anyone's desires. Its mysterious and almighty nature have caused many to lust after it; the pursuit of it has caused multiple wars, the creation of new worlds, and the deaths of thousands.

Information
The Azure is an omnipotent force that can grant anything if so desired.

Many are obsessed with the pursuit of the Azure. It was the focus of Lotte Carmine's obsessive research. Yuuki Terumi aimed to obtain the Azure so he could enslave the world, and worked tirelessly towards the goal of achieving it. Within the Embryo, those that were chosen were granted the right to fight against Izanami and obtain a fragment of the Azure's power if they won. It is known that Hazama was able to obtain his. Ultimately, Ragna the Bloodedge and Terumi fought for the Azure - Ragna was victorious.

The Azure appears to have some form of will, having created a version of Es to act as its guardian over the Gate. Es specifically refers to it as the .

BlazBlue: Central Fiction Library Entry
''The true Azure. What has become known as the one true BlazBlue.''
 * Azure Flamed Grimoire

Trivia

 * Despite being a central part of the BlazBlue series, the Azure does not have a Library Entry.