When the truck slammed into Kei Nagai's body, he should have died instantly. Instead, the high-school students finds himself resurrected, with all of his wounds somehow healed. However, Kei's real problems are just starting. Now revealed to be an Ajin, one of my mysterious new breed of demi-human that have begun appearing around the world, he's been marked with an international bounty, and in the eyes of the world, he's been marked with an international bounty, and in the eyes of the world's governments, Kei is a specimen to be contained by any means possible. Now he's on the run, unable to trust anyone except his closest friend, and his only hope is to discover the terrifying secrets behind his new abilities before he is forced to use them in battle! When you have an infinite number of lives ahead of you, death is only the beginning in AJIN: DEMI-HUMAN!