User blog comment:Xilinoc/Ch. 588 - The Headless Star 7/@comment-24153155-20140709222521

I actually do believe that Yhwach and the Soul King once were one entity but that for certain reasons both parts were isolated (I believe Yhwach could be a Spirit King, an. Yamamoto tried to destroy this being, but something either went wrong or it could simply not be done (immortality). To me, the actual Soul Palace kinda resembles the Tenchuren, it might be just a too straight forward guess or just too NASA, but I could imagine that the remains were put into a seal/grave/future Soul Palace and sent into orbit to a galaxy far, far away (the future Royal Realm). It kinda feels Yamamoto/the pre-Gotein 13 did everything within their power to ensure the (remains of the) Soul King were out of reach. This could also explain the very existence of the Royal Guard: if the remains were just that, it wouldn't make sense to heavenly guard those (it doesn't really look like the Royal Palace would act as some sort of shrine, and if it does, then for sure no one seems to be "proud" of that part of history/culture/religion). It looks like someone suspected it could get out of hand at some point.

On a different note: if the Soul King, in whatever form, is what is to be considered the balance of it all, I wonder where that would leave the Hollows. As of now, I kinda imagine the whatever the Soul King is now, to be a gigai-like thing with perhaps a gaping hole... ;)