Our Last Crusade or the Rise of a New World

キミと僕の最後の戦場、あるいは世界が始まる聖戦

Iska, the youngest swordsman ever to reach the rank of Saint Disciple in the Heavenly Empire, is freed from prison to rejoin the war against the Nebulis Sovereignty, a nation of witches and mages. On the battlefield he crosses paths with Aliceliese, the Sovereignty's Ice Calamity Witch and its second princess, and despite standing on opposite sides of an entrenched conflict, the two find each other's convictions impossible to dismiss. Both seek to end the war — but from enemy positions with irreconcilable methods.