People like Gamon Sakurai

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 from July 2012 to February 2021 and was collected into seventeen volumes. In North America, it has been licensed for English release by Vertical.

It was adapted into a 3D anime film trilogy by Polygon Pictures between November 2015 and September 2016. An anime television series adaptation, also by Polygon Pictures, aired between January and April 2016, with a second season aired from October to December 2016. A live-action film adaptation was released in September 2017.

Ajin presents the story of a student named Nagai Kei, who discovers he is an "Ajin" when he is fatally wounded in a traffic accident. In the world of Ajin, a small number of humans (termed "Ajin") possess immortality and extreme regenerative abilities that trigger upon death, allowing them to completely recover from any mortal injury in a matter of seconds. Ajin can also create "black ghosts", highly dangerous combat-oriented entities that are only visible to other Ajin. "Black ghosts" are resistant to physical injury, exhibit extraordinary physical strength, and have sharp teeth and claws. Different "black ghosts" have varying degrees of intelligence: most are completely reliant on their Ajin for directions, and others, such as Kei's, are more independent and likely to engage in self-initiated actions.