In AD 2214, the "Grey Domain Storm" broke out simultaneously around the world - this was a storm of unknown particles falling from the sky, which was considered to be "abyss erosion" from another dimension. The storm destroyed the global communication and energy systems, caused a large number of biological mutations, and human society collapsed into fragmented ruins.
At the same time, some humans awakened "superpowers" in the storm and were called "the fittest". They can manipulate energy, matter, and even time perception. The world was reshaped into a remaining map composed of "sanctuary cities" and "wild wastelands".
