Anthology of D.Gray-man doujinshi written by different artists. Pairings: Allen x Kanda, Kanda x Allen

Every woman has white angel wings on her back. Who will find those wings that she herself cannot see...? This collection includes five stories, including the title story which depicts the true nature of love amidst a wavering heart. _Source: Booklive, machine translated_

Via amazon: A "wind" jar, one of the blue porcelains that is said to be a phantom tetralogy. Its mysterious beauty invites the viewer into the world of tragedy ...!? Includes three volumes and one volume depicting men and women fascinated by the magical blue porcelain.