Board Thread:Theories and Speculation/@comment-3965545-20160511191323/@comment-734582-20160512085908

Omnibender wrote: I've always been critical of the lack of clarity on the whole Senju/Uzumaki relationship. We know they're "cousins", but there has never been a clear indication of how. Simple. Ashura had a bunch of otsutsuki kids who had Otsutsuki kids and somewhere along the way, those descendants became Uzumaki and Senju. Similar with Indra. His kids weren't Uchiha, they were Otsutsuki. Somewhere along the way they became Uchiha. Both probably because they mingled with humans.

Seelentau wrote: err, every Uzumaki is part of the Senju lineage, simply because the Uzumaki stems from the Senju clan. (that doesn't mean that we add every Uzumaki as a Senju, though. They're still two separate clans) This isn't true. The Manga never mentions or implies this.