After Ichigo Kurosaki won the final battle between him and Aizen, Vizards and Shinigami alike invaded Hueco Mundo, the land of eternal night, and destroyed the place from the inside out. So now all that's here is a bunch of crumbled rocks. That was, until Hollow Ichigo arrived, rearranging it into his own demonic fashion, reconstructing the foundation of hat was once a great universal power. To this day, he rules over all of Hueco Mundo with an iron fist.