Alma and Yu, two test subjects of the black order, artificial disciple, created monsters and suppose future exorcists, a tool to use against the duke of millennium.
They were caught in a dream of second exorcists. Disciples that were are able to withstand any injuries and deadly virus of the Akuma. Was it wrong of them to crave for a world that is without suffered and nightmare? They were really to pay any prices to win against the creator, to end the sacred bloody war. For a peace upon humanity. However, in the end, nothing but a massacre was the only outcome of the project.