Zero kara Hajimeru Mahou no Sho
English title: Grimoire of Zero
Japanese title: ゼロから始める魔法の書
Type: TV
Source: Light novel
Episodes: 12
Status: Finished Airing
Aired: Apr 10, 2017 to Jun 26, 2017
Broadcast: Mondays at 23:30 (JST)
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older
Studios: White Fox
Producers: Sotsu, Lantis, Half H.P Studio, Happinet Pictures, Infinite
Licensors: Sentai Filmworks
Genres: Action, Adventure, Fantasy
Themes: Anthropomorphic

In a world of constant war between humans and witches, there exist the "beastfallen"—cursed humans born with the appearance and strength of an animal. Their physical prowess and bestial nature cause them to be feared and shunned by both humans and witches. As a result, many beastfallen become sellswords, making their living through hunting witches.
 
Despite the enmity between the races, a lighthearted witch named Zero enlists a beastfallen whom she refers to as "Mercenary" to act as her protector. He travels with Zero and Albus, a young magician, on their search for the Grimoire of Zero: a powerful spell book that could be extremely dangerous in the wrong hands. During their journey, his inner kindness is revealed as he starts to show compassion and sympathy towards humans and witches alike, and the unlikely companions grow together.
 
[Written by MAL Rewrite]