Blood Alone is a Japanese manga series written by Masayuki Takano, the illustrator of Boogiepop Dual.

The manga ended abruptly in Spring 2014, however the story was concluded in a dōjinshi.

[3][4] Kuroe Kurose is a former vampire hunter, turned private detective and author.

He lives in modern-day Yokohama with Misaki Minato, an adolescent girl who has recently been turned into a vampire.

Misaki meanwhile struggles to come to terms with her vampire nature and her love for Kuroe.