The Ancient Magus' Bride: Jack Flash and the Faerie Case Files

Mahou Tsukai no Yome Shihen.75: Inazuma Jack to Yousei Jiken (魔法使いの嫁 詩篇.75 稲妻ジャックと妖精事件), localized as The Ancient Magus' Bride: Jack Flash and the Faerie Case Files in English, is a Japanese manga written by Yū Godai and illustrated by Mako Oikawa.