Go Nagai's The Devil Lady
Available on Pluto TV, FilmRise, Philo, Prime Video, Tubi TV, Plex
Jun, a beautiful supermodel, finds a dark secret in her own genes. Upon meeting Asuka, seeking to eliminate all "beasts", the power within Jun awakens. Gripping on her own humanity, and a beastly power boiling within, Jun evolves into Devil Lady.