Hiroki Endo (1997/2005)

(Not a review, just some notes to help me remember the things I've read. But written this way because it's the Internet, and some people will stumble across this page.)
This was a book that I picked up at Readercon in Boston, MA back in July. It was on the freebies table, and I only took it because it was volume one.
From Good Reads:
Eden Volume One is both a brilliant love song to the post-apocalyptic survival genre and the beginning of a deep exploration on man's role in the natural order. In the near future, a large portion of humanity is wiped out by a brutal, new virus that hardens the skin while dissolving internal organs. Those who aren't immune are either severely crippled or allowed to live with cybernetically enhanced bodies. Taking advantage of a world in chaos, a paramilitary force known as the Propater topples the United Nations and seeks world domination. Elijah, a young survivor searching for his mother, travels towards the Andes Mountains with an artificially intelligent combat robot. When he encounters a group of anti-Propater freedom fighters, a maelstrom of unique characters unfolds. Graphic, cyberpunk, and philosophical, Eden is a place where endearing heroes face a constant struggle for survival and violent surprises wait around every corner!It was an interesting story and a quick read. It's not available from any of the local libraries. The series was popular when it came out in English, or so I've read.
The story follows two immune teens and a scientist who is succumbing to the disease and who also had a hand it its spread. There are a lot of flashbacks to a time when the virus started and pockets of humanity are protected within governmental walls.
It then jumps ahead a generation where the child of the two teens is traveling with a robot.
No, I'm not describing it well. Also, I'm curious what happened to his parents.