The Window Room is a small area that can be accessed
from Nail World by traveling to the end of the Red Nail Passage.
Features
Just as its name suggests, the Window Room is a room whose walls are dominated by large windows, each flanked by a set of curtains.
The center window acts as a portal, and, if interacted with, will teleport Urotsuki to either Teddy Bear Land or Sand Desert Land, depending upon which world is shown in the windows. To switch the displayed world, exit the Window Room, wait for a moment, then re-enter (repeat this until the background changes).