Kaya Saimori

Born into the esteemed Saimori family, Kaya was lavished with affection from an early age due to her innate ability to perceive spirits. Self-centered and domineering by nature, she treated her older half-sister Miyo—who possessed no such power—as little more than a servant. When Miyo became engaged to the Kudou household, Kaya's burning jealousy drove her to repeatedly plot against her sister in an attempt to destroy her newfound happiness, establishing her as the primary antagonist fueling conflict in the story's early chapters.