Ajin is a live-action adaptation of a Japanese manga series written and illustrated by Gamon Sakurai. Kei Nagai dies in a car accident, but realises he is a type of immortal known as Ajin (demi-human). Hunted by humans, Ajin is eventually found by the government and used as a subject in cruel experiments. He finds fellow demi-humans along the way as he escapes and goes on the run.

17 years ago, immortals first appeared on the battlefields of Africa. Later, rare, unknown new immortal lifeforms began appearing among humans, and they became known as Ajin (demi-humans). Just before summer vacation, a Japanese high school student is instantly killed in a traffic accident on his way home from school. However, he is revived, and a price is placed on his head. Thus begins a boy's life on the run from all of humankind. Written by animenewsnetwork.com