The D.Gray-man Official Fan Book -Gray Log- (Gray's Memory)- (D.Gray-man公式ファンブック灰色ノ記 録 , D. Gurē - man kōshiki fan bukku haiiro no kiroku) is a series compilation booklet, with informations on more than 80 character of D.Gray-man compiled by Katsura Hoshino. It was originally scheduled for september 2 2016 but it was postponed for unknown reasons. Later Scheduled for April 4 2017, but changed to March 3 2017. As of March 1, 2017, it was announced to be delayed again, with no new release date given.