A sudden large-scale disaster swept across the entire world.
Most human beings were caught off guard and were wiped out.
But no one thought that it was not war or viruses that were destroying the world.
But nature...
Only now did I discover that aliens really do exist
Just...
In this apocalyptic world full of despair,
Great heroes save the world,
The selfish man saves himself,
And I just want to save you.
Concept: The struggle of love, family, and friendship in a post-apocalyptic world
