About “Blood Alone”
Blood Alone is a Japanese manga series written by Masayuki Takano, the illustrator of Boogiepop Dual. It was originally published as a dōjinshi. The manga ended abruptly in Spring 2014, though the story was concluded in a dōjinshi. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.