The stage is modern Japan. Woman ninja Mikage Azusa which belongs to a ninja group of people protecting peace from a shadow, Hugeness crime organization "Magus" that exists in hostile relations for years every day, it kept fighting. Magus it starts the development of an ultimate biological weapon. Physical strength and capacity for regeneration that far exceeds humans. And biological weapon ―― orc that has the sexual desire like the brute is born. Azusa who is defeated in battle with orc and becomes a captive. She who has been made the nursery of the breeding experiment of the orc...