Nene Yashiro, a first-year Kamome Academy student, radiates cheerfulness and optimism, driven by an intense yearning for romance. Her striking appearance includes long, wavy hair transitioning to seafoam-green tips, adorned with magatama-shaped ornaments and a skull brooch on her uniform. Dark tights embellished with crescent moons echo themes of cyclical existence and mortality. Frequently mocked for her "daikon legs"—a jab linking her radish-hued hair to cultural associations with purity and body image—she harbors lasting insecurities about her ankles. Beneath her dreamy demeanor lies impulsive tendencies, as her romantic pursuits lead her to ingest a mermaid’s scale, triggering a watery curse that transforms her into a fish. This affliction is tempered by her bond with Hanako-kun, forging their intertwined destinies and symbolizing both fragility and resilience. Her priorities evolve from fleeting infatuations to profound bonds, particularly with Hanako-kun, whose abrasive demeanor gradually gives way to mutual affection. A life-altering revelation of her truncated lifespan—linked to dismantling mystical Yorishiro artifacts—sparks defiance against her predetermined fate, fueling her quest for alternatives that balance loyalty and self-preservation. She grows increasingly resolute, confronting manipulative forces like Tsukasa and challenging Hanako-kun’s ethically dubious choices. Rooted in childhood neglect, her early solitude fuels a compassionate nature, driving her to connect with misunderstood supernatural entities. Domestic talents like cooking, sewing, and horticulture, once tools for courtship, later underscore her ingenuity and perseverance through club activities and crisis navigation. Symbolism weaves through her identity: magatama hair ornaments tie her to Shinto rites and her role in resolving supernatural conflicts, while lunar patterns mirror themes of love and transience. The skull brooch and sporadic shifts into a Mokke or fish highlight her existence straddling two realms. Key bonds include a trusting camaraderie with Kou Minamoto, transitioning from unrequited feelings to steadfast partnership, and a grounding friendship with Aoi Akane. Her rapport with Hanako-kun blends protective loyalty with simmering tensions, marked by unspoken affections and shared trials against spectral foes. Confronting self-doubt, mortality, and autonomy, she transforms from a lovestruck dreamer into a resolute figure challenging cosmic forces, weaving vulnerability with tenacity across her supernatural trials.