Bekira

Bekira is a Bokor who is an employee of the Department of Custody. She specializes in magic-based therapies against all spiritual and other diseases which she treats accordingly as well as treating Tsukoyomi's disease. In response to the question of what species she is, she replied "I chose to stop being human". When she first appears, she is traveling with Tsukuyomi searching for Byakki (who had been stolen from their custody). She also helped Kuugen stop Momiji Miyabe when she had been controlling numerous people she'd bitten where she threw one of the special injection darts at her.

(Source: Wikipedia)