It was announced on the official website of Nisio Isin or NisiOisin, author of Monogatari , that another one of his novels would get an anime adaptation.
Zaregoto novel between 2002 and 2005 and 7 volumes of the spinoff Ningen between 2004 and 2010, both published by Kodansha . He describes the story as:
“It's the vacation of a lifetime, a trip to a remote island filled with jinn and murder.
On Wet-Feathered Crow Island, a small speck in the Sea of Japan, lives Akagami Iria, the exiled daughter of a powerful family. Born into great wealth, she was a princess of the highest rank. Until she was cut off by the leader of the Akagami Foundation. For the past five years, she has lived on Feather Island, with her maids. But she didn't go alone. She invited the best minds Japan has to offer to come and stay with her.”