This world did not evolve naturally, but was a grand program built by a supreme being whose origin cannot be verified - the "Primordial Code". Everything in the world, from a grain of sand to a star, from a mortal to a god, is essentially a complex "existence code." The entire world is like a sophisticated server, running stably for countless epochs.
However, not long before the story begins, the core of this server - the "source code" - began to decay and collapse for unknown reasons. The worldwide manifestations of this kind of collapse are "**Code Corruption**" and "**Void Entropy**". "BUGs" begin to appear in reality. The laws of physics will temporarily fail in local areas. Monsters that did not exist are born from data gaps. Even the entire region and its history may be "formatted" and erased from everyone's memory.