D.Gray-man Official Fan Book - Gray Log

The D.Gray-man Official Fan Book -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 information on the D.Gray-Man series compiled by Katsura Hoshino. It was planned for release on September 02, 2016 in Japan but it was postponed.