D.Gray-Man is a manga created by Katsura Hoshino. It was adapted as an anime in 2006, and again in 2016 as D.Gray-Man Hallow.

The story follows Allen Walker as he joins the Black Order as an exorcist. Exorcists use a substance known as Innocence to fight Akuma, demons created by the Millenium Earl to kill humans. Working with the Millenium Earl are people known as the Noah Family, reincarnations of Noah and his twelve apostles. The Noah Family uses a Dark Matter which gives them the ability to create and control the Akuma, as well as superpowers that they use to fight the exorcists.