Our Last Crusade or the Rise of a New World
Original Title：キミと僕の最後の戦場, あるいは世界が始まる聖戦
Languages:
- English: Our Last Crusade or the Rise of a New World
- Thai: ศึกสุดท้ายของเธอกับผมคือจุดเริ่มต้นของโลกใบใหม่
- Japanese: キミと僕の最後の戦場, あるいは世界が始まる聖戦
- Chinese: 你与我最后的战场，亦或是世界起始的圣战
Our Last Crusade or the Rise of a New World (Japanese: キミと僕の最後の戦場、あるいは世界が始まる聖戦, Kimi to Boku no Saigo no Senjō, Aruiwa Sekai ga Hajimaru Seisen), also known as KimiSen, is a Japanese light novel series written by Kei Sazane and illustrated by Ao Nekonabe. The story is set amidst a long-lasting war between the technologically advanced Empire and the magic-based Nebulis Sovereignty. Iska, a skilled knight from the Empire, and Aliceliese, the "Ice Calamity Witch" princess of Nebulis, meet on the battlefield as enemies, but both secretly desire peace. Their encounter and mutual attraction spark hope for ending the war. The series has been adapted into a manga and anime, with the first season airing in 2020 and the second in 2024. The plot centers around Iska and Aliceliese's meeting, their fight for their ideals, and their attempts to end the war through their relationship. The series is popular for its unique world-building, captivating storyline, and complex character relationships.