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Necronomicon (ネクロノミコン Nekuronomikon) is a grimoire in the possession of Nei, one of the Seven Princesses of the Tombcastle.

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A grimoire of unknown authorship. It is a rare item known only to dilettantes. It is said that its content changes every time it was opened, and its final sentence also reflects the future.

It is currently being stored in the Tombcastle library that stood in remote area. Its content cannot be deciphered except by the Tombcastle Princess Nei who has been registered as its "latest owner", and because of her troublesome personality, it doesn't have a chance to show its true value.


Necronomicon is the name of a fictional grimoire that appears in the works of H. P. Lovecraft and various authors of Cthulhu Mythos.

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