[quote=@clanjos]
So... is this a city that just simultaneously exists in every dimension? If not, how are we to get there? How do we know about these mysterious disappearances? Why would we abandon our jurisdictions as Riders to leave our monsters to flourish so we can fight these guys?
[/quote]

Yes it exists in every dimension. About the disappearances, it's on the news and the Shocker combatmen March on the streets in a daily basis, also our rider powers were unleashed at the same time all of the Kaijin broke free, and plus, they're all siding together. I just put Shocker monsters in this first post, but later I'll mix stuff up.