Sister Bikini is the head nun of Hazakura Temple. Bikini is an alias of hers, which she chose to make her seem younger and as it gives people a good image before meeting her. She is a hearty, motherly woman with a carefree attitude to a lot of things due to her position of a nun. She is known to be quite flirtatious with men. Despite being a nun at a temple where spirit mediums come to train, Bikini has no spiritual powers to speak of. She raised the other nun, Iris like her own kin.