In the 23rd century AD, after the earth experienced an apocalyptic catastrophe called "Zero Point Collapse", civilization was reborn in the gap between metal and flesh. Human beings, awakened mechanical life, and genetically modified people live together in twelve "symbiosis rings." The consciousness cloud network eliminates language barriers, and the "Collapse Convention" seals all memories of the doomsday. "Difference" becomes the most dangerous word.
Purpose: The survival of civilization lies not in avoiding mistakes, but in retaining the courage to make mistakes.