The apocalypse has come, and the creatures have mutated and become dominant in one fell swoop.
Humanity is weak and facing an existential crisis.
…
Xu Yan was reborn and made plans before the end of the world. When the end of the world comes, absorb the essence of alien beasts, successfully become a controller, and control powerful abilities.
Xu Yan: I have a good temper, but the sword in my hand has a bad temper.
