Old Museum Owner: Guardian of the Gap

In 2075, "Gap Erosion" broke out around the world - the real space and the "subspace" carrying ancient civilizations gradually overlapped, and "Gap Areas" appeared in cities: shadow puppets in the old Chinese cities would independently perform wars, medieval ghosts leaked from the oil paintings of European castles, and bloody runes appeared on the Mayan stone tablets in the American rainforest. Only the five major civilization cores (China, Europe, Egypt, America, and Two Rivers) remain in the uneroded "safe zone", while the remaining areas have become "chaos zones" and are occupied by out-of-control "spiritual core organisms".