Looking for Armor

High-dimensional projections invaded and disasters brewed. People instinctively took up weapons to stop the invaders, but they were horrified to find that the firearms, artillery shells and even various advanced weapons in their hands could not destroy these invaders at all. Despair is spreading. At a time of despair, a few people are lucky enough to have the power to fight against the invaders. They will face this unprecedented survival crisis together with tens of millions of people.