User blog comment:CoolJazzman/Soken Ishida death caused by Yhwach?/@comment-2211792-20130630122343

Could be. When Soken died, Uryu looked the same age as Ichigo when his mother died. Of course, that would make Yhwach the ultimate asshole in the whole series, killing three of the dearest people to Ryuken: his father, his wife and the love he had to give up. Thing is, we don't even know if Soken was pureblood, so he may very well have been a target for Yhwach's holy selection. And even if he was, so was Masaki. What if Soken was tainted in some way, as well?

Also... Remember Ryuken's mother, who had a strange mark on her leg, which looked suspiciously similar to the one Sora left on Orihime's leg? If Yhwach killed her, as well... Oh my... That would make me understand why Uryu went to Vandenreich: to kill the son of a bitch, or die trying.