Our Last Crusade or the Rise of a New World Manga Series by Kei Sazane, Ao Nekonabe

As the unending war between magic and machine rages on, the greatest witch and the strongest swordsman have finally come face to face on the battlefield. They must destroy the other if either of their peoples are to be saved, but this battle may not be so simple. Only one thing is certain: their meeting will change the destiny of this world forever!

Fate has guided Iska and Alice together once more as they cross paths at an Imperial painter's art exhibit. There, they agree to meet again-only this time, to settle the score! But when an ancient power awakens to threaten their very lives, Alice is forced to choose between her country and her ideals! Up against an all-powerful foe, will the two heroes form an unlikely alliance-or find themselves unable to overcome their allegiances?

A vortex-a fount of light that has the power to turn those it chooses into astral mages-has appeared, and both the Empire and the Nebulis Sovereignty are hot on its tail, each determined to stop the other from getting their hands on it. But great care must be exercised, especially by the Imperials, as those who dare venture too close just might find the mark of a witch freshly emblazoned on their skin...