Board Thread:General Discussion/@comment-4957813-20131113141215/@comment-26420452-20140206210620

PrinceVertigo wrote: Shikai involves using the Spirit's power without forcing them to materilize in outside your Inner World, so it's perfectly feasable that while you can call upon your spirit for power, it's not present within you. Another thought I've had on the matter is that the Medallion doesn't steal away your Spirit, it just subjugates them into materilizing only for their new master.

I liked your theory, however, then I recalled Hitsugaya going nuts about not sensing Hyōrinmaru anymore. Something definitely happens to the soul.