Watch this arc be about showing just how large of an influence the Hogyoku has on the world and how bad that can be.
Think about it. If we believe what Aizen said about the 'yoku being the source of Chad and Orihime's powers, then that means that it created an entirely new ability- Fullbring- to give a reason for how and why they can do the things that they do. Because of this action, there is now apparently some other group of people who are trying to kill Uryuu, Orihime, and any other "special" humans.
Of course, Kubo could also just be pulling all of it out of his *** in an attempt to give Ichigo back his powers.
Think about it. If we believe what Aizen said about the 'yoku being the source of Chad and Orihime's powers, then that means that it created an entirely new ability- Fullbring- to give a reason for how and why they can do the things that they do. Because of this action, there is now apparently some other group of people who are trying to kill Uryuu, Orihime, and any other "special" humans.
Of course, Kubo could also just be pulling all of it out of his *** in an attempt to give Ichigo back his powers.