Documents' Key

The Documents' Key is an item in Dream Game.

Overview
The "Documents' Key" is an item that's found frozen in one of the many icebergs at Ten-Mou, the iceberg that has the key can be read about on the Ten-Mou page.

After finding the iceberg with the key, you have to throw 4 ApocBR cans at a specific part of the iceberg then use the Delete Hammer on it which will break the ice part in half, dropping the Documents' Key onto the floor allowing you to pick it up as an item in your inventory.(WARNING: PLEASE READ THE BUGS/TROUBLESHOOT AS THERE'S A BUG AFTER BREAKING THE ICE)

Despite the name of the item, this item isn't even used for the Documents Room, as Nash later on finds out that the key wasn't even made for the keyhole. This leads into other lore speculations as to what this key's actual usage is.

Documents Room Interaction
Upon using this key on the Documents Room located in Ten Mou 's town, a special interaction will play out with Nash saying: "Nash: The key is not working!! or am I just bad at this somehow?"

"Nash: Ugh whatever, I'll just break the door with the hammer." You are then able to break, not just the lock, but the ENTIRE DOOR causing it to drop into multiple pieces like a smashed biscuit. Renting the key obsolete for it's purpose...

Trivia

 * Although Nash breaks the Documents Room's door with the Delete Hammer as a substitute solution for the key not fitting, you still can't break the door without the key as you need to experience the Documents Room interaction to break it.
 * It is unknown whether or not if the key has any other usage outside of the Documents Room interaction. However, seeing as Nash mentions that the key doesn't work on the door, it heavily implies that the key was likely made for a different door.