God-shaped Evolution

In the new century, the sky is in chaos, and the surface of the earth is no longer suitable for human survival. Humans can only settle underground and at the bottom of the sea to continue their race. Not only that, but strange beasts are running rampant, and evil spirits are misleading the public. The last bit of space left for humans is about to fall. Fortunately, the sky does not disappoint people, and humans themselves are undergoing a strange evolution. A Sky Shield Guard, composed of evolve