The story can be called unique, though the premises seem to be drawn from a plethora of sources. I enjoy the compilation of them, however, as it makes for a nice backdrop for an anime taking place in a seemingly hopeless near future. When the main character, Yuji Kaido, is forced into the many life or death battles (life's norm in the anime), he initially is a complete woos. I enjoyed the elements of buildungsroman evident in how Yuji overcomes his childish fears (a bit cliche) to become something of a seasoned veteran. If it wasn't for the virus inside of his body heightening his skills, I would not buy into the idea of his fighting prowess increasing so dramatically in the span of less than a year. The only major problem I had with the show, which resulted in it not receiving a ten from me, was the digression of the supporting character, Marlene Angel. She is a full-blooded combat soldier initially and, in the same time span it took Yuji to progress, she becomes annoyingly passive and anti violence.
There are some philosophical questions such as the purpose of the human race and the consciousness of nature and the Earth which should receive some careful observing. All in all, worthy of the nine. -matt