Based on the Light Novel of the same name.
A few days ago it has been announced that an Anime adaptation of Zero Kara Hajimeru Mahou no Sho is in production and will come in the Spring Season, now a promo has been uploaded:
Tetsuo Hirakawa (kawa no Hikari) is directing the anime at WHITE FOX Studio.
Anime News Network describes the storya s follows:
“The “grimoire fantasy” series follows a witch named Zero who is ignorant of the world and a half-beast half-human mercenary who longs to be human. Witches who practice sorcery exist in the world, however, in this era no one knows how about the art and study of witchcraft. Zero is going on a journey to search for a magical tome called “The Book of Zero” that hides a power that can destroy the world. The mercenary travels with her as her guard.”
Via: Anime News Network