Kimi to Boku no Saigo no Senjou, Arui wa Sekai ga Hajimaru SeisenKimi to Boku no Saigo no Senjou, Aruiwa Sekai ga Hajimaru Seisen; Kimi to Boku no Saigo no Senjou, arui wa Sekai ga Hajimaru Seisen; Our Last Crusade or the Rise of a New World; Последнее поле брани между тобой и мной, или начало мировой священной войны; キミと僕の最後の戦場、あるいは世界が始まる聖戦; 你與我最後的戰場，亦或是世界起始的聖戰

The Empire, a nation of advanced machinery and science. The Nebulis Royal Household Agency, a land feared as “the country of wishes.” In the midst of the long, endless war, between the two, the boy and the girl meet. The ice witch revered as the strongest: Princess Aliceliese The young swordsman who is among the Empire’s greatest forces: Iska The two meet as enemies at war. However, just as the boy is enchanted to the girl’s beauty and nobility, the girl is attracted to the boy’s strength and way of life. Cooperation is impossible, and there is no path forward except through the other. And yet...