man u cant understand that they werent married kushina with uzumaki that naruto inherit his fathers name...also noone knew that they had a relationship....very few actually...the elder,the 3rd ,some from uchiha and some really good friends...also jiraya....very few also...read this
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he says they are related by blood it says BY BLOOD...but...senju was the main family and uzumaki not...go learn sth about japanese history and what that mens in japan and then come to me and say that...also the thing that she is gonna give birth was secret the where and everything related...