Mahoutsukai no Yome: Nishi no Shounen to Seiran no KishiOAD, OVA

The story takes place shortly before Cartaphilus took a nap and Chise became an auditor at the academy. Elias and his friends help Chise prepare for the academy, where in the middle of everyday life, Spriggan visits the mansion on a spooky horse with the words,