Ajin: Demi-Human (Japanese: 亜人, Hepburn: Ajin) is a Japanese manga series written and illustrated by Gamon Sakurai. It was serialized in Kodansha’s seinen manga magazine Good! Afternoon. It was adapted into a 3D anime film trilogy and an anime television series by Polygon Pictures. A live-action film adaptation was released in September 2017. Ajin: Demi-human presents the story of a student named Nagai Kei, who discovers he is an “Ajin” when he is fatally wounded in a traffic accident.