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This is the story of Saya Otonashi who under the care of her adoptive family has been living the life of an anemic and amnesiac, but otherwise ordinary schoolgirl. Saya’s happy life is shattered when she is attacked by a chiropteran, learning that she is the only one who can defeat them.
Armed with her katana, Saya embarks on a journey with her family, allies, and her chevalier, Haji, to rid the world of chiropteran and rediscover her identity. The course of the journey reveals the background history of the chiropterans and Saya's very deep past, which extends into the mid-19th century.
The series is initially set in present day Okinawa City (Koza), on Okinawa Island, near the US Kadena Air Base. In the course of the series, Saya visits locations across the world, fighting enemy chiropteran and searching for her origins.

Now what will happen some years after? This is left completely to you.

So and here the character listing:

Saya - NanaoIse210
Diva - Princess Jen Oh DearS
Kai
Riku
George
Haji
Amshel
Solomon
James
Nathan
Karl
David - Princess Jen Oh DearS
Julia - NanaoIse210
Lewis
Van Argiano
Dr. Collins
Joel
Karman
Moses
Iréne - Saya Otonashi DDS
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