According to my best guess there are roughly 8-11 realms or dimensions that forge together what we call this universe like continents on Earth separated by oceans. What they have always wanted has been to come here in our realm! Like people of different foreign races with different language, color, religion, they all are evil and arrogant! So, we built Narus to make everyone uniform and like minded, politically speaking. They came and you had a subconscious part to play in all of this. Yes you always wanted them locked in their realm, but you gave, see we can never be clean always a little dirty, little confused and deprived. That’s our weakness so we are Narus too! Now, the only life you live is to get your way here, fix your navigation, and throw them out, destroy Narus. But they will come again…