While each and every one of Takuma's classmates got powerful abilities, Takuma got Drilling (Hole digging). Branded as useless, Takuma was driven out of the Royal Castle. While inevitably digging a hole, he chanced upon hot springs. With a great effort, Takuma was determined to run an Onsen. However, that Onsen included a cheat-like effect of raising stats upon entering-- He runs the Onsen while sometimes kicking his annoying classmates around.

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

Pairings: Kanda x Allen, Allen x Kanda