In a world where humans and youkai coexist, Yukio, a human apothecary, is unexpectedly visited by her ex-husband, Shiratsuki, an eight-tailed white fox. Despite their brief and arranged marriage that ended swiftly, Shiratsuki proposes a reunion, surprising Yukio. Can these estranged partners reconcile their past and find a new path forward in this fantastical tale of romance between a humble apothecary and a powerful kitsune lord?