Why did a muddy swamp turn into a dry desert?
What is the mysterious purple cube?
Who placed the space gap that can be infinitely traversed?
What are the mythical beasts waiting for on the top of the mountain, looking up at the sky?
Behind all this,
Is it the distortion of time and space, or the loss of technology?
Is the aura about to revive? Or is the end of the world coming?
It's all about survival in the fortress.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.