Erotical Wizard to 12-nin no Hanayome

Ichinose Junpei was about to drop out of Tokyo's magic academy because he couldn't demonstrate any magical aptitude. Out of nowhere a beautiful witch named Meryl appeared in front of him and said, "I need your power, as the reincarnation of the Demon Lord." Not interested in becoming the new Demon Lord, Junpei shares his secret with Sonia, a...