Kimi to Boku no Saigo no Senjou, Aruiwa Sekai ga Hajimaru Seisen  

The Last Battlefield Between You and I, or Perhaps the Beginning of the World's Holy War, キミと僕の最後の戦場、あるいは世界が始まる聖戦, Our Last Crusade or the Rise of a New World

The Empire is known for its advanced knowledge, while the Nebulis Imperial Household Agency is feared as a country of witches. On the battlefield between these two nations, a young boy and girl met. Aliceliese, the ice witch princess, was renowned for her strength within the agency, while Iska, the swordsman, gained notoriety as the ultimate force on the battlefield at an incredibly young age throughout Empire history. Their initial goal was to defeat one another, but as they became acquainted, their feelings towards each other evolved. The boy was captivated by the girl's beauty and nobility, while she found herself drawn to his strength and way of life. Despite the prohibition against walking together and the necessity for them to defeat one another, their mutual attraction could not be ignored.

Kimi to Boku no Saigo no Senjou, Aruiwa Sekai ga Hajimaru Seisen has been published in English as Our Last Crusade or the Rise of a New World by Yen Press since November 5, 2019.