The Revival of the Human Race Began with a Wana Tribesman

The earth lost its color, and the sky became suffocatingly dim. The riddled earth seems to be unable to continue human civilization, but instead provides an excellent testing ground for alien invasion. Higher level weapons? A higher level of life? Strength? Luck? "No! We all want it, the younger generation of the human race, our destiny is always firmly in your hands..." "Children, when you step on our bones, the sticky blood is our blood. When it dries up, it will also provide you with a layer of upward path..."