Floor -1

Summary
Floor -1 is a dark area found above floor 0. As of yet, it is simply referred to as the hangout place, because there is no real use for the floor. Floor -1 sports two prominent items. Firstly, a locked chest that has a purple mist around it. Second, it has a door similar to the one in the maze on Floor 3. To get to floor -1, you are able to open the door special rank or not with "AllKnowing".

Trivia

 * Floor -1 was added on 7/19/2019.
 * Floor -1 has the fastest closing entrance portal.
 * The song on Floor -1 is a remix of "Sword of Telemon".
 * Floor -1 was supposed to be opened only by Member+ ranks, however due to a potential coding error anyone can open it.