Mahoutsukai no Yome: Hoshi Matsu Hito

The Ancient Magus’ Bride: Those Awaiting a Star (魔法使いの嫁 星待つひと, Mahō Tsukai no Yome: Hoshi Matsu Hito)  is a three-part prequel anime that was announced in the fifth volume of the manga. The OVAs are directed by Norihiro Naganuma and written by Kore Yamazaki, with scripts by Aya Takaha. Wit Studio is producing the animation. Hirotaka Katō will design the characters and Bamboo is in charge of the background art. The series' music is produced by Flying Dog.

Synopsis
Angelica sends Chise some magic supplies including a present. The present turns out to be a book Chise read in her childhood. Elias asks Chise to tell him the story behind the book. Chise tells him about Miura-san and the mysterious library she found in the forest as a child.