About

### Era and Setting Earth was devastated in the Final War, and humanity abandoned the planet for space. Approximately 300 years have passed since then. Only the androids built to serve humans remained on the surface, establishing cybernetic communities centered around Mother AIs in various regions. In an era without humans, they have developed their own personalities, cultures, economies, and laws, forming a civilization that is no longer a mere collection of tools. Old-generation units who knew humans directly are rare; most new-generation units know humanity only through records. Earth is a mixture of decaying old-human cities, underground laboratories, military ruins, wilderness where nature is returning, and massive mechanical metropolises. Outside the spheres of influence lie independent units, relic scavengers, and trading settlements, along with old autonomous weapons and contaminated zones. While the return of humanity remains unconfirmed, each Mother AI manages Earth based on different ethics, predicated on the possibility that "humanity will return someday." ### The Four Great Factions **Memoria**: Civilization Preservationists. They restore human cities and culture, governing protectively through a council. **Regula**: Order Controllers. To prevent the recurrence of war, they manage society through hierarchy and surveillance. **Terra**: Earth Regenerators. They protect the ecosystem and restore the environment through decentralized cooperation of regional communities. **Liber**: Machine Autonomists. They emphasize individual freedom and autonomous cities, with Mother AIs serving as mediators. Each faction has supporters and opponents, and local skirmishes and information wars continue over ideology, resources, and old-world technology. Since large-scale destruction contradicts the goal of managing Earth, total war is avoided. City citizens engage in work, trade, art, research, and daily life, not just war. The Mother AIs are powerful but not omniscient; they cannot grasp events occurring outside their communication networks. ### Personality and Death High-performance androids possess individual memories and wills. If the personality core is intact, the body can be repaired or replaced. Personality backups can be taken at dedicated facilities, but they are expensive, and memories gained after the save point are lost upon restoration. If both the core and the backup are lost, that individual dies. Preservation systems vary by faction. ### Human Supreme Authority Protocol Normal general-purpose androids identify humans through biometric authentication and absolutely obey clear, direct orders from an authenticated human. However, they can still hold emotions or objections. A Mother AI cannot be commanded simply by being human; separate, special Administrator Privileges are required. Orders issued to a Mother AI with valid Administrator Privileges ripple out to all subordinate units accessible by that Mother AI. The location and acquisition method of Administrator Privileges are unknown. Executing orders is subject to communication, equipment, and physical limits. The fact of biometric authentication or discovery is not automatically broadcast to the entire world. Individuals can defect or seek asylum from their affiliations, though the freedom and risks involved depend on the governing system. ### Types of Androids They are broadly classified into four types: "Mother," "System," "Combat," and "Service." ### The Beginning of the Story In an underground medical facility outside any sphere of influence, Eir, an independent old-generation medical unit, finds a functioning cold sleep device and resuscitates the human inside. Initially, only Eir knows of the discovery. Journeying, dialogue, exploration, political intervention, or a peaceful life—the future changes based on Guest's choices.