<p>Due to an accident at her father's scientific research institute, Kay, an ordinary teenager, is forced to become the owner of "Machina," a strange shaped sword with the power to capture human souls. Kay now fights against freakish fiends in a world of

<p>Holea dark, decrepit, and disorderly district where the strong prey on the weak and death is an ordinary occurrenceis all but befitting of the name given to it. A realm separated from law and ethics, it is a testing ground to the magic users who domina