Hmm, actually Ryuken and Masaki are cousins. That would make Ichigo and Uryu second cousins. But there is still some speculation only because Masaki calling Ryuken's mother "aunt" could just be a respect thing. True Ichigo and Uryu both have parents that are full blooded Quincy's. Either way, it is still a common practice in many countries to have arranged marriages or marry between cousins/second cousins. Especially among royalty and other important families. Weird in American culture though. >.< Although it hasn't changed my opinion on this paring. :3 I still think they are totally hot for each other!