User blog comment:Xilinoc/Ch. 611 - The Soul King Dies (edgy as ever, Kubo)/@comment-24963493-20141228090000

I feel like I should bring up the fact that Yhwach calling the Soul King "father" doesn't necessarily mean that he's the Soul Prince/a direct decendent/creation/whatever else you may call him. It could be like when Yhwach called Ichigo his "son." It wasn't that Yhwach was actually Ichigo's father, but more than he's the "father" of all Quincies, because he gave them their powers. I feel like it might be the same way with the Soul King, like SK could be responsible for everyone's soul or just everything existing, and as such is the "father" of everyone, similar to "God the Father."

Now, because of the way the chapter ended, I'm inclined to believe that Kubo did intend it to mean that SK is Yhwach's daddy, but I figured I'd throw in another possibility for everyone to think about since everyone's jumping to conclusions.