The Matron presides as caretaker of Ibogami Hot Springs in Zebra Prefecture. She oversees the maintenance and operations of these psychically charged springs, renowned for healing both mental and physical ailments. Her appearance features bright pink hair and a distinctly maternal demeanor.

She exhibits a gentle, patient disposition and kindness towards visitors. Though lacking psychic abilities herself, she possesses keen, uncanny intuition—especially for detecting unresolved emotional burdens carried by others. The hot springs present inherent risks; prolonged exposure invites possession by a dangerous spirit residing within their waters. This duality makes the location both a sanctuary and a potential hazard.

Her responsibilities encompass managing the hot springs' spiritual aspects alongside their physical upkeep. During an incident where Reigen Arataka and Katsuya Serizawa fell asleep on a train approaching Zebra Prefecture and became separated into a parallel world connected to the springs' supernatural properties, she maintained the facility. Her characterization remains centered on her role as guardian of this psychically charged environment.