D.Gray-man 3-in-1 Edition 2 collects volumes 4-6 in omnibus format and features story and art by Katsura Hoshino.

Allen questions whether he is willing to fight the Clan of Noah - after all, he signed up to kill akuma, not humans! With his left eye injured, he can no longer tell akuma from humans, making him a target for attack. Despite this weakness, he is sent by the Black Ministry to find and protect his master, General Cross.