Grimoire of Zero - S01

In a world locked in endless war between humans and witches, there are the "beastfallen": cursed humans born with the appearance and strength of animals. Their physical power and wild nature make them feared and shunned by humans and witches alike. Because of this, many beastfallen become mercenaries, surviving by hunting witches. Even with the hatred between the two sides, a cheerful witch named Zero hires a beastfallen she calls "Mercenary" to serve as her protector. He travels with Zero and Albus, a young magician, as they search for the Grimoire of Zero: a powerful spell book that could be very dangerous if it fell into the wrong hands. Along the way, his inner kindness shows itself as he begins to feel compassion and sympathy for humans and witches alike, and these unlikely companions grow together.