Mass murderers may not have much by way of careeer skills, but Kuroko Koumori seems to have landed her dream job as a hitwoman for the Tokyo police! A license to kill other killers? That's some serious job satisfaction, right there!

A crazy old man has set up a mansion laden with deadly traps. His goal: to make sport of slaughtering Japan's criminal population. Can Kuroko Koumori, psychotic murder turned hired gun for the police, escape with the other surviving criminals? Or will she be stopped by the most unlikely of foes--a personal maid?

Mass murderers may not have much by way of careeer skills, but Kuroko Koumori seems to have landed her dream job as a hitwoman for the Tokyo police! A license to kill other killers? That's some serious job satisfaction, right there!

A crazy old man has set up a mansion laden with deadly traps. His goal: to make sport of slaughtering Japan's criminal population. Can Kuroko Koumori, psychotic murder turned hired gun for the police, escape with the other surviving criminals? Or will she be stopped by the most unlikely of foes--a personal maid?