The Great Collapse is inevitable. Your world is breaking apart at the seams. You can thank my colleagues for that, and their constant shenanigans in your world.
The Nexus is a hub. Think of it as the center of the Multiverse. Whoever stands atop the world when the Great Collapse has come will determine what your new world will be. Why else would you all be gathered? This is a very significant cosmic event.
If Gods chariot stands atop the Shibuya 205 tower, the Nexus will become his dictatorship. There will be no room for diversity, only security.
If I stand atop it... Your world will be a world where the strong can shape as they see fit. The universe will shape accordingly. You will be free to live as you please. Of course, I will only be a figurehead, making sure Gods forces do not return.
Alternatively... If you are foolish enough to kill us both, your world will continue to stagnate. The Nexus will remain as it is... But none of you will ever return home again.
And those who stand against me... My Prince is coming as well, and he is not as kind to humanity as I am. No doubt he will try to kill you all. But should you be children of chaos, I'm sure you will survive...
Remember... One year. Make your choice wisely. *Giggles and vanishes into the darkness*