Eden

Eden is a mystical parallel universe and the original home of the angels and demons. Gabriel Alchemilia opened a portal to Eden, following the demons' praise of it, unknowingly unleashing the equally horrific angels.

Geography
Eden's land is made up of various shades of blue and green, all rock with very little flora. Massive chunks of the stone ground hover in the air, and the cities are built upon these. The trees that do exist are massive and decorated with mushrooms, and the sun in the sky is blue.