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Replica Canary

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Replica Canary

The Replica Canary is a device used by Exorcists to detect Miasma. It resembles a living canary in a cage, though the name would seem to indicate otherwise. The canary constantly sings until it detects Miasma, at which point it stops.[1]


  • The Replica Canary is based on the real life practice of bringing a canary into an active mine. If the canary died, it indicated the presence of noxious gases, allowing the miners to escape before they were overcome.


  1. Ao no Exorcist Manga: Chapter 16, page 15

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