Yebis

After Hubei returned back to Linerma the time has come for the white dragon witch to break the curse and open the portal in Madula, but from nowhere an Evil White Witch just appeared, they call her Yebis, now Luna and the witches need to face this witch before they can confront the succubus and the black witch dragon that Enix summoned.
Who is this Witch and why does she want the destruction of Linerma !