Kamui doesn't want to choose between two futures, but the universe forces him anyway. The movie never bothers explaining which side is right, because both are, and that's the whole point. A kid drafted into an apocalypse where every answer is a betrayal.
Kamui Shirou carries a terrible burden: he's the fulcrum upon which humanity's entire future pivots. Two opposing supernatural forces, the Dragons of Earth and the Dragons of Heaven, wage an apocalyptic war with conflicting visions for existence. One side demands humanity's complete annihilation to forge a purified cosmos. The other fights to preserve civilization as it is. Caught between these warring armies is Kamui, a young man whose latent power may exceed both factions combined. Twin sisters Hinoto and Kanoe serve as prophets for each side, their visions of tomorrow fundamentally incompatible. They marshal resources, recruit allies, and manipulate events to engineer the outcome they believe is righteous. Neither realizes that Kamui himself might be the deciding factor in their cosmic conflict, nor do they grasp the full extent of what he's capable of unleashing. This is apocalyptic supernatural action filtered through a deeply personal lens. The film balances visceral combat sequences with genuine philosophical weight, forcing viewers to sit with impossible choices about what world deserves to exist.