Note: Dark Horse released two Hideyuki Kikuchi novels in a single volume with artwork by Yoshitaka Amano. The two novels are A Wind Named Amnesia and Invader Summer.
Synopsis: The Apocalypse didn’t end with a BANG, but with a whimper. Silently, the “amnesia wind” swept away all of mankind’s knowledge. Thousands of years of human civilization vanished overnight as people forgot how to use the tools of modern civilization; who they were–how to speak–everything. Technology decayed as mankind was reduced to an extremely primitive level. Two years after the devastation, a young man explores a nation reduced to barbarism: America. Miraculously re-educated after the cataclysm, a young man is accompanied by a strange woman–somehow spared the obliterating effects of the amnesia wind. Pursued by a relentless killing machine, they search for those responsible for stealing their memories.
Note: The header image is from a Yoshitaka Amano art book.