Saya, the main character, lost her memory and has been living with her adopted family. Her everyday life seems quite normal, except that she eats a lot more than she actually needs. Then one day she meets a guy named Hagi in a park. She is told that he has been searching for her, for a long time. Since then, her normal life has changed completely. (This manga series is proceeding quite a bit differently from the anime) 
A high school girl named Saya can not remember anything from her past. A handsome young man, Hagi, appears and something seems familiar about him. This girl is more than human with an ancient and mysterious past. She will hunt down and kill the monsters called Chiropterans.

A story focused on Saya and Hagi's past in Russia in the first years of the 20th century (1910's).


It is the official novel adaptation of the anime series. It expands on the events of the anime and gives greater background information on the battle against chiropterans.

A Haji solo story, prior to the events of the TV series. In Hong Kong, a police detective named Nishitatsu Yoshi  investigated a string of murders in which the victims died due to loss of blood. During the investigation, he encountered a mysterious man who may have a connection to these incidents.

Saya Otonashi, a seemingly normal high school student, suffers from amnesia and she can't remember the past year of her life. One day, after a man appears and gives her a katana sword, her destiny begins to be revealed. 
 
Soon she finds herself fighting the latest threat to humanity - Chiropteran monsters, ravenous immortal creatures that can change their form, disguising themselves as human beings. They feed off blood and hide themselves within the human world. An organization known as the Red Shield has been waging a private war to wipe them out and now the struggle has grown. Saya's journey for the truth has begun. 
 
(Source: Sony Pictures Home Entertainment)

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