A old Hero Retirement plan.

It been 60 year since they invaded we call them the "Teras" and they came with only one purpose to destroy all of humanity in the beginning we were badly beaten and in only the first few more then a 1/10 of humanity population was killed
But in ever Dark tunnels there is a light and that light were the Evolve human that are stronger faster then normal as a result of experiments and they could grow even stronger amount them is a soldier Only know as Genesis. The greatest line of defense human had ever know. But even the mightiest of tree can not fight against time.