Board Thread:Theories and Speculation/@comment-3965545-20160511191323/@comment-3965545-20160511214045

I was meaning that perhaps his one of his parents is indeed a Senju since we know Uzushio and Konoha were close, so maybe a Senju moved to Uzushio and married an Uzumaki, then all the war crap happened and they moved to Amegakure.