The official website for The Ancient Magus’ Bride manga has announced that the series is inspiring two spin-off manga in the Manga Door app for iOS and Android devices. Yū Godai is providing the story for the Mahō Tsukai no Yome Shihen.75 Inazuma Jack to Yōsei Jiken (The Ancient Magus’ Bride Psalm 75: Jack the Flash and the Fairy Incident) manga, and Mako Oikawa is illustrating the manga. Makoto Sanda is providing the story for the Mahō Tsukai no Yome Shihen.108 Majutsushi no Ao (The Ancient Magus’ Bride Psalm 108: The Magician’s Blue) manga, and Isuo Tsukumo is providing the art. Kore Yamazaki is supervising both spin-offs, and they are scheduled to launch in the app in early April 2019.
Yamazaki launched the manga in Mag Garden’s Monthly Comic Blade magazine in 2013 but the magazine ceased publication in September 2014. The manga then moved to the publisher’s Monthly Comic Garden magazine.