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Disaster comes and engulfs the world.
Human beings use their last strength to build high walls, build giant cities, and preserve the last fire.
But now, disaster strikes again.
Humanity will turn from defense to offense!
Go witness heroes, imitate heroes, and become a hero!
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Underworld Retrograde novel is a popular light novel covering Sci-fi genres. Written by the Author Ta_Lang_Xun_Zhou . Read Underworld Retrograde novel online for free.