Natural enemies.
That is the absolute predator for a specific species in nature.
Like insects and birds, sheep and wolves, and...
Humans and that thing.
It is absolutely impossible for living things to defeat their natural enemies!
In the world that Bai Ze lives in, the natural enemies of humans are orcs.
They are strong and adaptable, and they quickly drive the entire human population to destruction.
In order to save themselves, humans decided to call humans from other worlds to help them defeat the orcs.
But...
Humans from other worlds were summoned, but Bai Ze and the others soon discovered.
These summoned humans are in similar situations to ourselves in their world.
They were all forced into a situation of imminent destruction by their natural enemies.
Even later, they discovered that there were more other worlds merged together.
Includes...
Their respective natural enemies!
In order to survive against powerful natural enemies.
Humanity finally decided to launch the plan to fight against natural enemies.
Let the natural enemies kill each other.
And human beings are looking for a glimmer of hope for survival in the gaps.
