Wolf's Rain (2003)

Wolf's Rain takes place in a post-apocalyptic future where wolves are believed to have been extinct for over 200 years. However, it is revealed that wolves still exist and have evolved into a form of humans with the ability to turn into wolves at will. The story follows a group of wolves who are on a journey to find a fabled paradise called "Rakuen". Along the way, they face various dangers and obstacles, while also encountering other characters who either help or hinder their quest. As they travel, the wolves also learn more about themselves and their own identities.