There were nine Neutral Zones in the Tower. Of them, only eight had ever been seen.
Attacking the Neutral Zones was something that people did when the Tower first appeared. Obviously, when it was so boldly claimed that conflict was disallowed in those realms, people were driven to test the boundaries.
However, those who pushed the boundaries were all aptly punished. They realized that the Tower System was an entity that, within its domain, had power equal to the Heavens.
After only ten years, the attempts at the Neutral Zones halted. The next 5000 years were spent under the universal understanding that those rules could not be broken, only circumvented.
Naturally, ways around the rules were found. Using those methods, it was easy to kill any one person if one tried hard enough.
Still, causing large-scale damage was considered absolutely impossible.
That is, until the events of the Blood Moon Phenomenon.
