Path of Evolution

In the millennium after the nuclear war, human beings were forced to live in a closed canopy, and the entire social civilization structure regressed. Under the control of the giant biochemical computer known as the Seven Sages, it was preserved as the biological parent species. Outside the broken continent, it is ruled by humanoids who were once created for war. A parasite, a human boy, a growing experience, what secrets are hidden in it? This is the process of evolution.