Maria has learned that his father, Yusei, was killed by vampires. Worse, it was Maria's own fault, and guilt-haunted he locked the memory away--until the face of Mary wakens the memory again. Now Maria has to rescue the kidnapped Mary in order to get answers from her.
General Note
Printed Manga-style; book opens from left to right. Pages are read from right to left.
"First published in Japan in 2014 by Kadokawa Corporation, Tokyo"--Copyright page.