The Ancient Magus' Bride volume 3 features story and art by Kore Yamazaki.

An Ancient Evil

Chise has come face to face with the person responsible for the brutal killings at a nearby churchyard—and to her shock, it's someone she recognized from her visions of the tragedy at Ulthar! Appalled by the realization the the alchemist who wrought such horrors is still up to his old tricks, Chise must act to stop him. But in order to control her dangerous powers as a sleigh beggy, she'll need all the help she can get.