Vatican Miracle Examiner (OVA)

Centering on Hiraga Josef Kou, a genius scientist, and Robert Nicholas, an archives and cryptanalysis expert. The two work as a team as the Vatican's "miracle examiners," traveling the world to investigate the authenticity of claims of miracles.

Three unaired episodes of Mayonaka no Occult Koumuin .

Based on Ekaterina Kurae's chapter 16 from the manga, and episode 10.5 of the anime.

Bundled with the 19th and 20th volumes of the Ao no Exorcist manga. The first episode is based on the second chapter of the second Ao no Exorcist novel Home Sweet Home. The second episode is based on the title chapter from the Ao no Exorcist: Spy Game novel