Secret Realm

This was a giant building with nine floors.

Each floor was more than six meters high, and the height of the building exceeded sixty meters.

Most startling was the fact that instead of being built in an urban area, the building was situated on a cliff. It went through clouds, as if the people in the building could touch the sky.

White pigeons flapped their wings as they flew into the building like tired birds returning to their nests.

Many men in green robes took letters off the pigeons' legs. Then they quickly copied the information and sent it to upper management, revealing a tightly controlled system.

This large amount of information had been collated by spies and reported from the lower levels to the upper levels. Finally, it reached the ninth floor at the top.

This was an antique attic with simple furnishings.