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, Arui wa Sekai ga Hajimaru Seisen]

In this 2018–2021 Hakusensha series, a young prodigy from a scientifically advanced empire and a princess wielding forbidden magic from a rival witch nation find themselves drawn together as unlikely allies—and potential lovers—amid a centuries-old war. Spanning seven issues, Kimi to Boku no Saigo no Senjō, Arui wa Sekai ga Hajimaru Seisen blends romantic tension with high-stakes fantasy, exploring whether love can flourish when duty demands enmity. The story is best known for its emotional core and striking art, making it a compact but resonant entry in the modern romantic-action genre.