Nazuna Hiwatashi navigates adolescence as a human high school student dreaming of idol stardom, her bond with Michiru Kagemori defined by shared music sessions and mutual encouragement. A fateful bicycle accident exposes both to a beast factor through blood transfusions, triggering Nazuna’s metamorphosis into a kitsune beastman—an event that irrevocably alters her path. Captured and confined in a research facility, she is extracted by Boris Cliff and recruited by Alan Sylvasta to masquerade as Ginrou, the fabricated deity of the Silver Wolf Order. Assuming the mantle of Déesse Louve, she leverages shapeshifting talents to embody this mythic figure, outwardly championing hope for Anima City’s beastmen while unknowingly advancing Alan and Boris’s hidden crusade against hybrid beings.

Her cult leadership demands a calculated, imperious façade. She coldly rebuffs Michiru’s attempts to reconnect, publicly denouncing her friend’s compassion as performative while privately wrestling with envy over Michiru’s emotional authenticity and unease over her own deceptions. Critical junctures emerge during a orchestrated concert meant to deploy a Nirvasyl Syndrome cure, where Michiru’s intervention disrupts Nazuna’s planned revelation of her human past. Chaos erupts as Shirou attacks Michiru, compelling Nazuna to confront the collateral damage of her compliance with Alan’s schemes. Observing Michiru’s resilience amid the crisis galvanizes her defiance; she ruptures Boris’s control, channeling her gorilla-enhanced strength to physically repel him.

In the outbreak’s aftermath, Nazuna partners with Michiru to disseminate a hybrid-blood serum and strategize methods to calm berserk beastmen using Shirou’s howl. This alliance reflects her tentative return to empathy-driven action, though shadows of her manipulative past linger. Her capabilities—multiform shapeshifting (kitsune, silver wolf, human guise with silver-streaked hair), winged flight, gorilla-arm brute force, and Ginrou-form aura projection—evolved under Boris’s mentorship, initially weaponized for cult theatrics but ultimately repurposed to mitigate the chaos she helped unleash.