The Nexus is a hub world that connects to most other worlds in the game. Young has the ability to return to the Nexus from most locations in the game by using the "Return to Nexus" menu option in the Map tab of the pause menu.
The Nexus contains 21 portals to different locations. With the exception of Street, these portals are activated as Young finds their destinations while exploring. As such, the Nexus is not normally used to reach new areas.
After entering this area from the Turquoise DRAWER area, there are two ways to go: one way contains a connection to the Debug World; the other way contains the 49 Card Gate. The 49 Card Gate blocks a connection to the 50 Card Gate back in BLANK.
On an inaccessible island visible from this area is a chest containing Card 49.