In the movie both hero and villains are demi- Human called Ajin .They kill them self and get back alive again most of the times. Our hero discovers he is demi - Human when he met a accident the he back to life then he become lab rat of the government for testing drugs over Demi humans and others Ajins the villains are taking revenge on government because of the treat them as Lab rats and hurting them as much as possible Ajin have super powers too the have ability to create ghosts like mirrors to kill people and fight with others at last hero kill the bad guys and he back to alive total happy ending movie