- **Spiritual Universe**:
A quantum-state plane entered by human consciousness after leaving the body. It is observed and studied by the advanced civilization known as the “Reincarnation Research Institute,” and divided into seven spiritual domains, each with its own distinct properties and physical laws.
- **Science-Based Supernatural Phenomena**:
- Souls = programmable aggregates of spiritual particles
- Cultivation = optimization of spiritual-particle code
- The Underworld = quantum data relay station
- Magical treasures = spiritual-particle compression devices
- **Balance of Power**:
- Reincarnation Research Institute: a transdimensional observation agency
- Ghost race: native data-based life forms
- Demon race: spiritual-particle hijackers
- Surviving gods: administrators of the old system
