The world within the seven gates has been honestly unified. They only use the seven gates as entrances, even though, in reality, all wrena who enter there will arrive at the same land and under the same conditions, without being able to see one another.
The seven Candrasas try to create their own world in L-03 for the purposes of this selection. They joined forces, creating the whole world behind those seven gates with translucent glass and many different types of areas.
Some are only filled with burning forests, some are only filled with barren land, some are in the desert, some are in the middle of the ocean, in empty space, and some are in plain places filled with only fine mists.
Those places were harmless, and what they saw was harmless. However, something they couldn't see was even more dangerous because they wouldn't know who it was or what they could do to it.
