Ōmi Ōgi is the grandmother and matriarch of the hereditary Ōgi family exorcists, protected by their patron deity Karura. She embodies authority and wisdom as the family leader, guiding younger generations in their duties. Though retired from active exorcism, she provides crucial support, guidance, and access to her formidable spiritual power when her granddaughters confront overwhelming supernatural threats. Her deep knowledge of the family's ancient traditions and techniques makes her a foundational pillar sustaining the Ōgi clan's centuries-old mission.