Shiranui

Shiranui is an enigmatic onmyoji who operates under the banner of the Mikudari family during the Taisho period, serving as a persistent antagonist who repeatedly targets Mao. Masterful in water-based arts and possessed of a deeply cold and scheming nature, he is always accompanied by the mysterious Yurako, a woman whose appearance strikingly resembles Sana. Driven by an obsessive desire to seize control of the Mikudari lineage, he orchestrates a series of conspiracies from the shadows, making him the central villain fueling the story's suspense.