 If you liked
D.Gray-man
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 ...then you might like
Shikabane Hime: Aka
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Similarities in the plot of both shows. A secret religious organization that few know about that deal with the dead returning as something else. All while keeping it a secret from thew general public.
This religious organization training men and women to fight these creatures that have returned to "life" while using weapons from a similar origin to the creatures they intend to destroy.