Aizawa Asuka

In the post-apocalyptic future, the complex networks of machines have created chaos and the human world was destroyed. The robots known as the "Constructer" continued to build a meaningless structure with no one to guide them. Soon these cities reach out to the outer planets and another breed of life form emerges. Follow the journey of a strange man, name Killy, in his search for the understanding of the chaotic world being run by Silicon lifeforms out to destroy him and every living thing in their path.

Some time after a space mission to Mars ends in destruction, strange monsters called "Ancients" begin appearing around Tokyo. A group of specialists consisting of three girls and one troubled young boy must fight the Ancients until they can come to understand exactly what it is they are fighting. When one of the Ancients tells them that they are the true invaders of Earth, they must search within themselves to grasp what truly is reality.

In the post-apocolyptic future, the earth is buried in an enormous megastructure created by machines. There is barely a trace of humanity and silicon beings run rampant. The last hope for mankind is information on a data disc from an engineer called Cibo.