She's Sakuya's cousin and fellow spirit medium within the Shimazu Household—though the two can't stand each other. Right now, Sakuya holds the provisional leadership position, but she's a serious contender for the role herself. The tension between them runs deep: where Sakuya comes across as selfish, arrogant, and immature, she's the opposite—composed, mature, and refined.
There's an unresolved romantic subplot here too. She could've secured her claim to the Shimazu headship by becoming Asano's fiancée, but she stepped aside and let Sakuya have him instead. Despite everything Sakuya's done, she still harbors feelings for Asano.
In combat, she channels her spirit medium abilities through her familiar, Kamai Tachi.
Content compiled by AnimeList.moe from publicly available sources.