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Dantalion no Shoka
Dantalian no Shoka anime series announced by GAINAX, and will be aired on July 16, 2011!
Director: Yutaka Uemura
Music: Yo Tsuji
Studio: GAINAX
Story
Based on the “Bibliotheca Mystica de Dantalian” light novels by Mikumo Gaguto. Hugh Antony Disward inherits an old mansion and a personal library from his grandfather. In the basement of the mansion he meets a mysterious girl, Dalian. She is a Dantalian and a gateway to “Dantalian’s Bookshelf”, which stores the prohibited books of demons.
Source
Wikipedia