Nanamine Sakura, a third-year student at Kamome Academy and Broadcasting Club member, conceals her century-old supernatural existence behind a youthful facade. Bound to the school as an antagonist alongside Yugi Tsukasa, her origins and confinement remain shrouded in mystery, hinting at unresolved desires or a pivotal past event tied to the institution. Her enigmatic century-long quest centers on a wish—likely escape from the school—though its specifics stay elusive. She sports lime-green hair in an asymmetrical bob with braids framing her doll-like features, accentuated by a red gem brooch. Her wardrobe shifts between a winter uniform, a black tea-party dress with bishop sleeves, and a maid costume for events. A unique trait allows her to temporarily adopt a taller, muscular male form, though the mechanics behind this transformation remain undefined. Aloof and emotionally detached, Sakura rarely betrays her feelings, save for flashes of irritation toward Natsuhiko Hyūga’s advances or Tsukasa’s capricious antics, which she compares to handling a mischievous feline. While manipulating rumors to advance Tsukasa’s schemes, she extends genuine hospitality to Yashiro Nene, recognizing their shared tethering to supernaturals. Her loyalty to Tsukasa’s agenda intertwines personal ambivalence with contractual duty, complicating her alliances. A pact with Tsukasa grants her sway over supernatural rumors and communication with *kokujoudai* (black familiars), positioning her as a linchpin in destabilizing boundaries between realms. Her motivations stay ambiguous, fueled by her immunity to Tsukasa’s plan to erase supernaturals. Speculation hints she may transcend typical classifications—perhaps a god or appointer of the Seven Mysteries—leveraging authority to reshape the school’s supernatural hierarchy. Her relationships pivot on pragmatism: she views her alliance with Tsukasa as transactional, tolerates Natsuhiko’s affections with detached annoyance, and navigates Nene’s trust with a blend of camaraderie and calculated manipulation. Mysteries linger around her true nature—ghost, deity, or an entity defying categorization—and her decades-long history with Tsukasa preceding his death. Connections to the Kanagi legacy and the Pit God’s influence remain threads yet to unravel, leaving her ultimate role in the academy’s conflicts open to speculation.