Irene

The war never stops: in a different time, on a different battlefield, hiding deeply in the folds of history... They are called Chiropterans. They can change their form and disguise as human beings, but they are not. They are immortal creatures that feed off blood. An organization, named Red Shield, has been fighting to exterminate this pestilence, and the struggle has now…

Ten years ago, a bizarre phenomenon appeared in Tokyo. Three days later, two types of humans with supernatural abilities appeared: emotionless dolls that only do what they're programmed to and wield the ability of surveillance, and powerful contractors, feared and hated by the humans that know of their existence. Rationally self-preserving and without the feeling of guilt, it'…