Simple Street (不思議の通路, Fushigi no Tsuro, Passage Wonderland) is an area accessible from Urotsuki's Dream Apartments.
The Simple street is a long, black and white road with 19 doors leading to random different areas in the game, serving as a 'fast-travel' room if you know where you're going.
You can be taken to The Hand Hub, Chocolate World, Art Gallery, Broken Faces Area, Red Streetlight World, Theatre World, the Gray Road, the School, the Cyber Maze and the Intestines Maze (a dead end).
How to Cheat the Simple StreetEdit
In actuality, the worlds you enter aren't randomly assigned to each of the doors. Instead, one of the possible worlds is chosen according to an algorithm described in the next paragraph, and then every door in the area besides the one you entered from (Which is distinguishable from the others by the empty sign above it, all other doors have writing on their signs) will lead to that one area the world picks when you enter it.
It is currently unknown how the Simple Street determines which world will appear upon initially entering the area in a new dream session- it appears to be random. However, once it picks a world, upon continually reentering the Simple Street, it will cycle through the possible choices in the following order: Hand Hub -> Chocolate World -> Art Gallery -> Red Streetlight World -> Theatre World -> Broken Faces Area -> Intestines Maze -> Gray Road -> School -> Cyber Maze -> Hand Hub. So, for example, if it picks the Hand Hub initially, leaving and reentering the Simple Street will force it to pick Chocolate World.
If you equip the Glasses effect, you can tell which world the Simple Street picks, because the area's black background will change to the chosen world's panorama, including no panorama for the Gray Road. Leaving and reentering the area with the Glasses effect still equipped will cycle through the worlds as described above, meaning you can exit and reenter the area until you get the desired area.
NOTE: In order to access any of these worlds from Simple Street, you must have accessed the desired world a different way first. (Example: you must have entered Red Streetlight World from the Nexus before being able to access it from Simple Street) (needs confirmation)
Nexus → Urotsuki's Dream Apartments → Simple Street