* Based on the light novel series by the same name written by Kobashiri Kakeru and illustrated by Shizuma Yoshinori.

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.

Source: ANN

Note: The first two episodes received an early screening at a special event on April 7, 2017, at Anime Akihabara and the Third Taiko Building in Nagoya, on April 9, 2017, at Animate Sapporo and Animate Sendai, and on April 10, 2017, at Animate Osaka Nipponbashi. The regular TV broadcast started on April 10, 2017.

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Sequel: Mahou Tsukai Reimeiki