Board Thread:Questions and Answers/@comment-24593407-20140227000341/@comment-11051098-20140523203929

All the mixed-blood Quincies died during his Auswählen, except Uryû. Masaki was a pure-blood and died too, from losing her powers, but maybe Yhwach viewed pure-bloods who married non-Quincies, impure, or something.