Julia Silverstein is a doctor working with the Red Shield organization. Initially shown as the medical supervisor administering Saya&#039;s blood transfusions, it is later revealed that Julia is a highly skilled clinician who strives to support Red Shield with her research into chiropteran biology. While Julia primarily works with Lewis and David, she was brought to organization by Collins and as such, tends to remain loyal to his ambitions. Though she feels strongly for those around her, Julia approaches everything in life with clinical precision and thus finds it easier to deal with others analytically rather than emotionally.     ~!When her supervisor and mentor, Dr. Collins, defects to Cinq Fl&egrave;ches (due wanting to be able to publish his research and because he disagrees with the idea of killing the &quot;superior&quot;chiropterans) he is able to convince Julia to leave Red Shield with him. She meets with David several times while he is investigating Cinq Fl&egrave;ches and the Corpse Corps, and he always reminds her that she will be welcome back to the Red Shield when she is ready. When Diva becomes pregnant after raping Riku, Julia becomes her personal physician. This sends Collins into a jealous fit and he attempts to murder her, but David saves her and is shot instead.    Afterward, Julia keeps vigil over the critically wounded David in the hospital and is shown kissing him while he sleeps. She also returns to the Red Shield and is able to use the knowledge she gained to aid them in the final battle with Diva. After Diva is killed and the group returns to Okinawa, Julia is able to use the knowledge she gained to extend the Schiff Lulu&#039;s life span and develop a serum from Saya&#039;s blood that can stop the effects of the Delta 67 agent. She also is revealed to be pregnant with David&#039;s child.!~      (spoiler source: Wikipedia)

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)

__Birth Place:__ Kanagawa, Japan

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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.

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.