Axos

An unknown creature called Axos once inhabited Earth and almost wiped out humanity. But the researchers all over the world discovered a way to defeat those creatures and create a weapon called AP or Axos Pillager. Now they are willing to teach anyone on how to use it, that's why the leaders of the countries all over the world agreed to work together to defeat the Axos. Later on they created an Academy which is focused on training soldiers to participate in the fight versus the Axos'. Now then, will the humans lose hope? Or will the next generation win against these monsters?