In the middle of the 22nd century, the earth entered a science fiction era called the "Spiritual Network Era". In 2145, breakthroughs in quantum computing and neuroscience gave birth to the global quantum network "Spirit Network". Human beings are directly connected to the network through neural implants, gaining unprecedented cognitive abilities and data manipulation capabilities. This technological revolution has completely changed the social structure: education is achieved through knowledge downloads, and medical care relies on online diagnosis, but over-reliance leads to digital addiction and privacy crises. The Earth Federal Government nominally unifies the world, but its actual power is divided among several giant companies such as 'neurotechnology companies' and 'data giants', forming an oligarchy. Global power is unevenly distributed: the North American Free Zone is famous for innovation and personal freedom, but it faces severe polarization between rich and poor; the Eurasian Commonwealth emphasizes collectivism and rapid technological development but limited freedom; the Antarctic Exclusion Zone serves as a secret scientific research base and conducts high-risk experiments. The Beiliu District of Kyoto in China has become the core hub of the Spirit Network. The environment here is complex, with high-rise commercial districts and underground slums in sharp contrast. Internal forces are intertwined, including business representatives, government officials and hacker organizations.
