(No system + dual male protagonists + dual female protagonists + upgrade + alien species)
What is hidden behind natural disasters, the invasion of alien species, and what else is hidden in this world.
Su Chen looked at everything in front of him and kept mumbling, "No, none of this is true!!"
Li Nan looked at the thousands of people behind him and clenched the bloody red broken sword in his hand...
Why is no one watching? [What]