Keisei Tagami is a Buddhist priest under the anti-Shikabane organization known as the Kougon Sect. He found Ouri Kagami as a three-year-old child and raised him at his temple orphanage. Keisei was an orphan himself, raised by Makina Hoshimura's father. When the Hoshimura family was brutally murdered, he agreed to become Makina's Contracted Monk. He is something of a pervert, often placing "pervy anime posters", "zenbu-nose" figurines, and dirty magazines in Ouri's possession.