Blue Star Calendar Year 4588
The whole nation awakens to their profession, and everyone awakens to their profession at the age of 18.
At the same time, countless secret realms, copies, and forbidden areas around the world
rise from the ground
Then came countless high-level and low-level zombies
Although humans have awakened to their profession, their level is low, and thermal weapons are ineffective and unable to resist.
For a time, zombies roamed Blue Star, unstoppable.
Humanity had no choice but to build small underground fortresses one by one to survive.
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