Talk:Sankishin/@comment-24846744-20140423154846/@comment-16571503-20140423163810

That golden satellite is the Amaterasu Unit, one of the Sankishin. Inside of it, there is a unnamed girl. I personally usually say, Amaterasu Unit: I'm talking about the unit, Amaterasu: The girl inside of it.

Did Amaterasu create the Boundary? I would say no, but it isn't said if she did or not. Boundary is a space filled with seithr.

According to an Xblaze interview, Mori said that the world is like this: At the center, there is the Azure, and around the azure, there is the space known as the boundary. And on the outside of the boundary, there are many worlds which the Xblaze/Blazblue world is only one of them.

The Embryo has connection with the Master Unit, it gives it's vessel the ability to hear a special discover call to locate it, and having it turns the eye's azure and gives the power of Azure. Since the Embryo is written with the kanji 蒼の胚(Ao no hai, Azure's Embryo) I would guess the purpose of Embryo is for it to turn into the Azure.