A normal high school boy Kisaragi Ryuji's peaceful life is turned into an adventure by the return of his second cousin Eriko. Ryuji and Eriko seize a relic box from a black broker. In the box, they find a red dragon girl Rose. In order to protect Rose from the black organization, Ryuji decides to fight using his power as a relic handler.

Meet Bolt Crank, mercenary extraordinaire, and the man who eats metal! Through his travels, he stops along the way to make a few bucks and occasionally rescue damsels in distress. His taste for metal gives him quite an edge as he becomes capable of generating an assortment of weapons from his hand! It's a strange ability, but it seems to come in handy, so to speak. Bolt has an edge over his adversaries, but will that be enough? (Source: AnimeNfo)

The continuing adventures of Bolt Crank, the World's Greatest Mercenary, who has the ability to eat any object, mostly metal and weapons. When the time comes, Bolt can then reproduce those weapons and items in his right hand. (Source: ANN)

In a forgotten town known as the old capital of Tokyo, strange and mysterious crimes are progressively occuring. These supernatural occurances are beyond comprehension and bring fear and terror to the people. Only one person is not intimidated by the evil underlying these occurances and is willing to challenge them: Hyuga Mayuki, a young boy detective who holds a special insight power that allows him to uncover the real truth behind these occurances. (Source: ANN)