AUTHOR: ABENO Chako
The young man Huey took over the old mansion of his deceased bibliomanic grand father as well as the book collection that's stored in there. But there was a condition: he also had to inherit the "Bibliotheca". When he inspects the mansion, Huey discovers a cellar filled with piled up books. In the midst of them he comes across a black-dressed girl who's silently reading a book. She's called Dalian and has a big lock hanging in front of her. She herself is the entrance to the "Bibliotheca of Dantalian" which contains the prohibited "Phantom Books".
A girl named Nagisa Akira, is said to be the reincarnation of the Virgin Mary aka Maria s Daughter. The Vatican, realizing this, has sent one of its elite agents, Takagi Chrome, code named “Crimzon” to protect her. Chrome is one of the elite assassins directly under the control of the Vatican, used to carry out terrorist acts and the assassination of world leaders. Kuromo s new mission is to protect Akira so that she does not fall under the hands of the Protestant English. Thus begins the journey to protect Maria’s Daughter, and to find out about Chrome’s mysterious demonic power. (from Potato Land)