Our Last Crusade or the Rise of a New World, Vol. 3 (light novel)

Tasked with a special mission from the Saint Disciple Risya to infiltratethe Sovereignty, Iska finds himself breaking off from his platoon after anaccident he didn't bargain for. With Alice assigned to spy on him nearby, theseemingly incompatible duo manage to get a glimpse of what lies deep in eachother's hearts.