In 2073, the "neural plague" broke out. The virus was not fatal but would gradually devour human memory. Mild patients forgot recent events, and severe patients degenerated into "blanks" without self-awareness. The social order collapsed due to the collapse of memory.
- Core resources: "Memory Capsules", which are made by a small number of uninfected "Memory Guardians" to extract key memories (such as survival skills, family fragments) from healthy people's brains. They can temporarily repair patients' memories and become hard currency in the apocalypse; "Memory Bank", a server cluster hidden under the old-era library, stores the core knowledge of human civilization and is the ultimate goal of competition for all parties.
