Ash was living a life that seemed perfect in both his public and private affairs—serving as a captain in the Imperial Knights and even having an adorable noble fiancée. However, one day he is suddenly told that he is being expelled from the knight order and that his engagement is canceled!? Fed up with everything, Ash decides to leave for a new land. The place he heads to—the Kingdom of Rosebell—is a nation far more advanced than the Empire, which has been rapidly growing by exploiting dungeon resources. There, he reunites with his old friend Bale. In the kingdom’s second dungeon city, Ash begins a new life as a hunter. With his overwhelming strength, he steadily gains fame. Meanwhile, back in the Imperial Knights where Ash is no longer present, his junior Ulka—who absolutely adores him—changes her demeanor and prepares to chase after him.

Ash, a young man who once flourished as a Captain in the Imperial Knights and was engaged to a noblewoman, was living a life envied by all—smooth sailing and successful. However, one day, he was handed both a broken engagement and an order of expulsion from the Imperial Knights. Utterly disillusioned, Ash leaves the Empire and journeys toward the new world of the Rosabelle Kingdom. In this nation, which has surpassed the Empire in prosperity thanks to the power of its dungeons, Ash restarts his life as a Hunter. He quickly makes a name for himself, rising through the ranks with his overwhelming strength. Meanwhile, his junior, Ulka, who deeply respects him, chases after Ash and heads toward the Kingdom. The tale of reversal that will repaint a gray life is now beginning.

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