Sadly, for the warrior humans, the crystal structures and marble palace crumbled, just as fast as they were put up. the Outerverse didn't recognize them as owners, and therefore, anything they built would fall. Due to the magics the Outerverse was made of, as well as had deep within it, it only accepted ownership by the current owner. Either that person had to die, or give it up willingly. Like Hikaru, the former owner, had done to Kai.
Thus, the Ace clone and the warrior humans were forcefully expelled, and teleported out of the Outerverse, as their magic signatures were not recognized.
(Done't even try, Hawk. NPCing it, since Kai is in Hell.)