Classroom of the Elite - Naruto Dimension Realm

A phenomenon that could threaten the survival of humanity will soon occur one year in the future after a few weeks Shirou Rosewood and his classmates successfully entered and studied at the Tokyo Metropolitan advanced Senior High School.
The phenomenon is a phenomenon of the connection between the Classroom of the Elite World and the Chaos Dimension Realm. With the connection between the two worlds, beings from the chaos dimension realm can come to the Classroom of the Elite World, and then do whatever they want there.
With the level of technological civilization possessed by the Classroom of the Elite World, it is impossible for the humans in that world to be able to fight off attacks from creatures originating from the dimension of chaos.
When the situation and circumstances are in chaos and confusion.
An opportunity to fight back suddenly appeared.
What opportunities do humans who live in the World of the Classroom of the Elite get?
With the opportunity given, can the human race in that world fight against the creatures from the dimension of chaos?
Who can get that opportunity?
How will the world end?
Can humanity survive? Or, instead, will it be destroyed?
All will be revealed slowly.