Blood+

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, 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.

An after story focusing on Hibiki and Kanade Otonashi, who were raised by Kai.