Promised Pen

The Promised Pen is an object possibly made by William Minerva, which was left behind at certain places or given to certain people to give the orphans of multiple Plantations the chance to find a safe place in the form of Shelter B06-32 or Goldy Pond.

Origins
Not much is known about the pen aside from the fact that there are at least 2 pens who both serve as a key to the underground shelter. The oldest and first pen was left behind at a different plantation then the Grace Field House, possibly by William Minerva. The second pen was dropped on purpose by William Minerva at the Demon Headquarters for Sister Krone, which she left behind for Norman and was later used by the Grace Field escapees as a map and a key to the underground shelter.

Functions
The pen had at least 5 known functions:
 * Location: When the middle of the pen is opened it projects a virtual navigation map for the orphans to find their way in and out the Grace Field House. It also shows their location outside the orphanage.
 * A key: The pen is the only known key to enter the secret Shelter B06-32 underground. It also is the only known key to enter Minerva's door in Goldy Pond.
 * Codes: The pen contains multiple unknown codes and messages.
 * Writing: The pen cannot be used to write with.
 * Pen Cap: Found in the Golden Lake, the cap gave information about Demons and the Demon World. chapter 73 p 8

The map
The pen serves as a navigation map for the orphans to find their way in and out the Grace Field House. It gives clues on where to go in certain codes.

0-Area

 * 00-00 is where the Grace Field House is located.

A-Area

 * A08-63 is where Goldy Pond is located as well as the Goldy Pond Resistance. Inside a windmill is a passage leading to a door that can only be opened with the pen.

B-Area

 * B00-15 is the place where the children ran of to after they escaped from the underground demon trap.
 * B01-14 is the location where the children fell into an underground demon trap.


 * B04-21 is the number shown in the underground tunnel that leads from the demon forest to a secret shelter.


 * B06-32 is the location of the underground Shelter B06-32 in the demon world.

C-Area

 * Unknown

D-Area

 * Unknown