Dimensional Assembly Order

The two-dimensional heroes gathered together, using the Oecto Academy in the narrow dimension as their base, to face the ensuing darkness together and face the mysterious force that brought them together. And among them, there seem to be many ordinary people who were inexplicably affected... "So why am I included!——" The male protagonist, a weak air manipulator, was inexplicably affected and traveled from the human world. He also accidentally developed his own brain and gained super powers. How should he face the sweeping darkness with them with an otaku body and a heroic heart?