Shattered Dimensions: Attack

The population of countries around the world has increased, and snatching resources has become inevitable. The war has become more intense, and humans have begun to violate peace treaties. Nuclear bombs streak across the sky one after another. The huge energy generated by the nuclear bombs bombards the entire world, causing cracks in the space where the world is located. Behind the cracks, there are actually worlds, and humans have begun to set foot in other worlds.