"BNA: Brand New Animal" is set in a world where humans coexist with beastmen, anthropomorphic beings with animal traits. The story centers on Michiru Kagemori, a human girl who suddenly transforms into a tanuki beastman. Fleeing persecution and seeking answers, Michiru arrives in Anima City, a metropolis designed as a sanctuary for beastmen. There, she encounters Shirou Ogami, a wolf beastman and vigilante who harbors a deep mistrust of humans due to past conflicts.

As Michiru adjusts to her new identity, she becomes entangled in a series of events that reveal the complexities of Anima City’s society. The city, while a refuge, is rife with political tension, discrimination, and hidden agendas. Michiru discovers that her transformation is linked to a mysterious organization conducting experiments on both humans and beastmen. These experiments aim to manipulate the genetic boundaries between the two species, raising ethical and existential questions about identity and coexistence.

Shirou, who initially views Michiru with suspicion, gradually becomes her ally as they uncover the truth behind the experiments. His backstory reveals a tragic connection to the Silver Wolf, a legendary beastman figure tied to the city’s history and the broader conflict between humans and beastmen. The narrative explores themes of prejudice, identity, and the struggle for equality, as Michiru and Shirou confront both external threats and internal divisions within Anima City.

The series balances action, mystery, and character development, with Michiru’s journey of self-discovery serving as the emotional core. Supporting characters, such as Mayor Barbaray Rose and the enigmatic Nina, add depth to the world-building, highlighting the diverse perspectives within beastman society. The plot escalates as Michiru and Shirou face off against powerful adversaries, culminating in a climactic confrontation that challenges the status quo and forces both humans and beastmen to reconsider their relationship.

"BNA: Brand New Animal" presents a layered narrative that intertwines personal growth with broader societal issues, offering a thought-provoking exploration of coexistence and identity in a divided world.