- Main world: The world of military technology in modern parallel time and space, where the secretly developed "Ark Project" quantum computer system exists
- Traveling through the world: On the surface, it is a doomsday wasteland world, but in reality it is a virtual training ground, which is ultimately revealed to be a real world ruled by AI in the future.
- The truth about the system: The military AI training program disguised as a traversal system is actually the fragmented consciousness at the core of future AI.
