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BNA: Brand New Animal is an original Japanese anime television series produced by Studio Trigger and directed by Yoh Yoshinari.
Ref: https://ptanime.com/bna-brand-new-animal-foi-surpreendentemente-excelente/
The series centers on Michiru Kagemori, a young teenage girl who suddenly turned into a tanuki beastman after her best friend Nazuna Hiwatashi was abducted following a blood transfusion. Michiru ran away to seek refuge in Anima City, a haven made for the Beastmen and meets the mysterious wolf beastman Shirou Ogami, who works for the city's mayor Barballet Rosé.
The two work to investigate the circumstances of Michiru's transformation while keeping the peace in Anima City, only to stumble into a conspiracy involving Sylvasta Pharmaceuticals-a prestige medical research center in Anima City-whose unsavory employees were responsible for accidentally providing the blood used in Michiru’s transformation along with Nazuna’s, who the company placed in a cult to claim herself as the Beastmens’ guardian deity known as the Silver Wolf. But Michiru learns the real Silver Wolf is Shirou, who forced to reveal his true power when dealing with the Sylvasta researcher Yata, who mutated into a berserk monster following his arrest.
Michiru learns Shirou is an immortal who gained his powers as sole survivor of Nirvasyl, a city of Beastmen that was destroyed a millennia ago by humans and dedicated himself to protecting his kind. Alan Sylvasta, the owner of Sylvasta Pharmaceuticals, reveals the Beastmen of Nirvasyl were actually victims of a stress-induced phenomenon called Nirvasyl Syndrome that caused them to kill each other before being finished off by the humans.
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