Brad Lester, once renowned as the strongest mage, vanished from the public eye after the tragic death of his young daughter. While living a quiet life as a lowly day laborer, his beloved wife is murdered by the "World Peace Promotion Association," an organization seeking his power. Driven by a despairing rage after losing everything, Brad sets out for revenge—only to find Valburga, the leader of the Association, has been transformed into a little girl?! Furthermore, she has lost her memories and has nowhere to go. Haunted by the memories of his late daughter, Brad resolves to "help his arch-nemesis regain her memories." Visiting the Olford Ancient Magic Research Institute, the mouse-worshipping town of Brooke, and the blizzard-shrouded village of Lutz, their long journey across the land begins—. An adventure fantasy of the strongest mage and his "child" companion!!

The story centers around Ryouta Yonekura, a young man whose motto was "Don't be wasteful." While touring an environmental organization, he comes across the base of a mysterious group called the Kankyou Hogotai Mottai 9. Led by a beautiful woman, the team has vast resources at its disposal such as a giant robot. Ryouta decides to get acquainted with this team in order to show them the true path of not being wasteful.

A collection of short, comedic stories from early in Yagami's career.

Collections of one-shots that won the monthly Hop Step Award from 1987 to 1996.

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

Pairings: Kanda x Allen, Allen x Kanda

Anthology of doujinshi from different artists. Cover illustrator: REIMON Peine Colour illustrator: Takahira