AMEN TO ROT: Books One Through Four (With ILLUSTRATIONS) (English Edition)

It's a zombie apocalypse and Amen the creature awakens with amnesia. Amen has flashbacks from when he was human which gives him clues on his mission. He saves a thirteen year-old boy named Ace who is appreciably delighted to find a creature who eats zombies. They soon discover this is not any ordinary zombie apocalypse, but there's a sinister alien force at work. These aliens are set on killing Amen but he remains one step ahead. He is also discovering Ace is not just a survivor, but may be a key to fighting the aliens who brought on this zombie apocalypse.