Board Thread:Questions and Answers/@comment-24463723-20140213211209/@comment-1268838-20140213223127

Keep in mind that unlike the other Quincy Mayuri had a chance to experiment on, who were all collected after the massacre 200 years ago, Souken was a relatively recent addition. His death was very recent, comparatively speaking. I suppose that yeah, it's a little silly that Mayuri just happened to have that photo on him, but Souken was very likely the last Quincy test subject he ever got his hands on.