...
The so-called shadow nodes
refer to an interface where the ubiquitous shadow plane touches the material layers of various spaces.
Through these nodes,
creatures that had mastered the beginner techniques of the shadows could move freely between the two spaces.
Due to the unique nature of the Shadow World,
most spaces throughout the Multiverse had nodes leading to the shadow plane, albeit in varying numbers.
Only a few places like the once Heavenly Family Palace, the lower three levels of purgatory, and the depths of the astral world, where the energy levels were too high, even omnipresent shadows couldn't penetrate or fuse, thus no corresponding shadow nodes could form there.
Matthew noticed
that the shadow creature which had just attacked him had appeared suddenly, given that their location wasn't anywhere near the front lines approaching the conquest of the Shadow Castle.