User blog comment:SunXia/Bleach Wikia Podcast - Chapter 621 Review/@comment-25897574-20150330064315

I believe I've figured out how to solve the problem of if Yhwach is the son of the Soul King or not. In the chapter where he reveals this, he is standing in front of the Soul King with no one else around. Why would he lie about being being the son of the Soul King if there was no one else in the room to lie to?