Then kirishima lives in an era, when the only sky that people know is gray, and most of the world-empty and ruins, and several people in power deprive the resources inorganized weak and poor majority. With the sword of his father, he has friends and enemies and goes in an adventure, looking for others who share his pedigree. Made of jigs are made from a rare material that a powerful organization known as Lost Eagle Nest claims that he wants to restore the world, but are they really Do it want? They will not stop before, to pick it up, and the fog and his friends now have the price for their heads.