Higher than cloud nine!
The kingdom contains floating blue tiles with holes in them that serve as the floor, along with several pillars scattered about.There is also a bench that you can sit on next to a Vending Machine.
If you enter from the Apartments, you need to chainsaw your way past the guards to open the door. Once they're gone, you can get to the other side.
The creatures that inhabit the world are mainly people that resemble Teletubbies and moving puddles with faces on them. There is also Dogboa (a canine version of Uboa from Yume Nikki), who you can see across the ledge with the dog sign on it, moving quickly in an inaccessible area.