The Boundless Path of Sin World?!
Angel had been ready to continue his snark, but when Augustine said that Mary Gold came from the Boundless Path of Sin World, he froze completely.
The key was not Sin World, but the Boundless Path!
This was the second stage of planar Fusion! It was also the stage during planar Fusion when wizards least dared to act recklessly. Take the current Southern Wizarding World, for instance: no one dared approach this Boundless Path, not even the Inspectors.
Planar Fusion had three stages. The first was the Rift Emergence Period, during which countless spatial rifts formed between the two worlds about to fuse. The devouring, dominant side squeezed the subordinate side being fused, continuously compressing its world membrane and casting out vast quantities of Constant Shards. This was the stage during which wizards fought most fiercely, because Constant Shards were the primary material for Wizard Gardens.
For that reason, the first stage was also called the "Garden Vessel."
The second stage of planar Fusion was the Boundless Path. During this stage, the will of the main world actively expended its origin to open a two-way passage between the two worlds, serving as the bond of Fusion.
It was called a two-way passage, but in truth, it did not connect merely two worlds. Since the passage contained the origin power of world wills, one could glimpse countless profound mysteries upon stepping onto it. For instance, one could sense more distant planes and render the coordinates of worlds on the other side real. One could even rely on a mere trace of aura to locate other main worlds within this so-called "two-way passage," turning it into a "multi-way passage."
Because it stretched in every direction and the roads between planes spread endlessly, it was called—the Boundless