Translated by Baka-Tsuki, formatted by me.

Files are slightly bigger because EPUB contains HQ images. This is a reformat, it fixes previous mistakes in my last upload. (You can verify this in Calibre, it looks much better)
It also includes volumes 1 - 12.
My previous upload was titled: “Madan no Ou to Vanadis Light Novel Volumes 9 - 12 [EPUB][ENGLISH]”

You can convert these files to MOBI with Calibre if you want.