Gehenna

Mina's plane for training heroes, Gehenna is rather well-made and peaceful, most of the time.

Appearance
Taken from the story:

"Kyouko shifts herself to the Plane of Gehenna, leaving Lily to supervise the construction of the Core Temple. Lady Mina hadn't expressly forbidden anyone from altering the landscape of the planes under her control and that is what Kyouko would do. To the South, volcanoes formed, both violently active and extinct ones. In the East formed a forest, vibrant green and lush. To the North formed a small sea, capable of holding even a Leviathan. In the West formed a cold, barren tundra, void of anything that could sustain normal life. And in the center of all four areas, a group of seven spires arranged in a circle with a single spire in the center to represent Lady Mina and her 7 Major Goddesses.

With the alteration of the plane's terrain done, Kyouko next created the four Guardians of each of the directional areas. For the North: the Black Turtle, for the East: the Azure Dragon, for the South: the Red Bird, and for the West: the White Tiger. The center, of course, would have its own Guardian as well: the Pink Hydra. Kyouko then blessed all five Guardians with eternal life as long as they guraded over their respective areas before returning back to where Lily supervised the Core Temple's construction.

With Kyouko done with her changes to the Plane of Gehenna, Lily then shifts to the Plane herself. Once there, she permanently alters the weather to Winter in the North, Spring in the East, Summer in the South, Autumn in the West, and constantly changing in the center unless Lady Mina objects.

With that done, Lily then creates a portal at the base of one spire to the Temple dedicated to Mina in Spectropolis with Illusia's aid. Then, she creates another portal at the base of a second spire to what was a fake door in the University of Elements. The final portal she makes at the base of another spire leads to not a physical location, but another plane: The Plane of Spirits. All of these portals are then made permanent or as permanent as a portal in Spectropolis could be with a Miracle. "

Rules/Laws

 * 1) Anyone who enters, other than Mina's goddesses, is totally subject to the will of each of the Guardians while in the respective Guardian's territory
 * 2) All Divine and non-divine Artifacts will be no more powerful than a mortal's enchanted weapon
 * 3) No divine power can be used in Gehenna without the permission of all five Guardians unless a member of Mina's pantheon.