An unknown civilization has arrived, and all humans on Blue Star have gone to the underground world.
All materials, weapons and even food need to be mined in order to survive.
Cheng Shuan, a max-level boss, traveled here and crushed everyone.
With the shadow of the sword, the monster fell to the ground with a crash.
She stood here, half like a fairy, half like a devil.
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Reading Guide: The heroine's emotional indifference is slightly criticized
There are almost no emotional lines, and the male protagonist's background is
Purpose: The end of the world is a test of human nature