About D.Gray-man.D.Gray-man is an ongoing Japanese manga (comic) series written and illustrated by Hoshino Katsura, beginning it's run in 2004. The series follows a young boy by the name of Allen Walker, who immediately stands out because of his unique physical appearance. Early in the series, Allen becomes a member of an organization of exorcists who find use in the rare power known as Innocence - a power of which Allen possesses. There is only a limited amount of Innocence in the world, and it is very picky as to who it chooses to wield it. It also manifests itself in each user in an entirely different and unique manner. This power is used primarily to fight a being known as the Millenium Earl and his army of akuma.